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Prof. dr. L. (Lex) Kaper

Faculty of Science
Anton Pannekoek Institute of Astronomy
Photographer: Dirk Gillissen
Visiting address
  • Science Park 904
  • Room number: C4.116
Postal address
  • Postbus 94249
    1090 GE Amsterdam
Contact details
  • Biography

    Profile

    Lex Kaper is Associate Professor at the University of Amsterdam and Professor at the VU University Amsterdam.  He obtained his PhD (cum laude) at the University of Amsterdam in 1993, and worked for four years at the Headquarters of the European Southern Observatory in Garching near Munich (Germany). He returned at the Anton Pannekoek Institute for Astronomy in 1998 with a Royal Academy fellowship. Kaper is the NL-PI of X-shooter, the most powerful spectrograph in the world, mounted on the ESO Very Large Telescope in 2009. He is the NL-PI of MOSAIC, the multi-object spectrograph for the ESO Extremely Large Telescope (2024), the biggest eye on the sky. Kaper is the secretary of the Netherlands Committee for Astronomy and is member of the Council of the European Astronomical Society.

    Research and teaching

    His research group works on the formation, evolution and fate of massive stars. Recent research highlights include the first spectroscopic identification of young massive stars that are still on their way to become main-sequence stars, the detection of dust waves in Galactic H II regions, and the study of distant galaxies using gamma-ray bursts, the most powerful cosmic explosions. He has also been involved in the search for variations of the fundamental constants of nature. Kaper teaches the second-year bachelor course on Astrophysics and coordinates the Master’s course Observation Project where UvA students observe with the Mercator Telescope on La Palma.

    Keywords 

    Massive stars, star formation, stellar evolution, gamma-ray bursts, spectroscopy

  • Publications

    2024

    • Azatyan, N., Nikoghosyan, E., Samsonyan, A., Elia, D., Kaper, L., Yeghikyan, A., Andreasyan, D., & Baghdasaryan, D. (2024). Searching for stellar population in the molecular cloud GRSMC 045.49+00.04. Publications of the Astronomical Society of Australia, 41, Article e055. https://doi.org/10.1017/pasa.2024.61
    • Backs, F., Brands, S. A., Ramírez-Tannus, M. C., Derkink, A. R., de Koter, A., Poorta, J., Puls, J., & Kaper, L. (2024). Properties of intermediate- to high-mass stars in the young cluster M17: Characterizing the (pre-)zero-age main sequence. Astronomy & Astrophysics, 690, Article A113. https://doi.org/10.1051/0004-6361/202450494 [details]
    • Derkink, A., Ginski, C., Pinilla, P., Kurtovic, N., Kaper, L., de Koter, A., Valegård, P.-G., Mamajek, E., Backs, F., Benisty, M., Birnstiel, T., Columba, G., Dominik, C., Garufi, A., Hogerheijde, M., van Holstein, R., Huang, J., Ménard, F., Rab, C., ... Zurlo, A. (2024). Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): PDS 111, an old T Tauri star with a young-looking disk. Astronomy & Astrophysics, 688, Article A149. https://doi.org/10.1051/0004-6361/202348555 [details]
    • Kaper, L., Stoop, M., Brands, S., & De Koter, A. (2024). Resolved massive-star populations in the Local Group and beyond. In EAS2024 (pp. 1280)
    • Pelló, R., Puech, M., Prieto, É., Rodrigues, M., Sanchez-Janssen, R., Dalton, G. B., Ducret, F., El Hadi, K., Garcia-Vargas, M. L., Lynn, J., Bharmal, N. A., Chapuis, D., Dupieux, M., Hottier, C., Larrieu, M., Martin, L., Mohamed, M., Morris, T., Pérez, A., ... Zeilinger, W. (2024). MOSAIC at the ELT: a unique instrument for the largest ground-based telescope. In J. J. Bryant, K. Motohara, & J. R. D. Vernet (Eds.), Ground-based and Airborne Instrumentation for Astronomy X (Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series; Vol. 13096). Society of Photo-optical Instrumentation Engineers. https://doi.org/10.1117/12.3019047
    • Pugliese, G., Saccardi, A., D-Elia, V., Vergani, S. D., Heintz, K. E., Savaglio, S., Kaper, L., De Ugarte Postigo, A., Hartmann, D. H., De Cia, A., Vejlgaard, S., Fynbo, J. P. U., Christensen, L., Campana, S., Van Rest, D., Selsing, J., Wiersema, K., Malesani, D. B., Covino, S., ... Xu, D. (2024). Rapid Response Mode observations of GRB 160203A: Looking for fine-structure line variability at z = 3.52. Astronomy and Astrophysics, 690, Article A35. https://doi.org/10.1051/0004-6361/202244098
    • Ramirez-Tannus, M. C., Derkink, A. R., Backs, F., de Koter, A., Sana, H., Poorta, J., Kaper, L., & Stoop, M. (2024). The spectroscopic binary fraction of the young stellar cluster M17. Astronomy & Astrophysics, 690, Article A178. https://doi.org/10.1051/0004-6361/202450256 [details]
    • Stoop, M., Derkink, A., Kaper, L., De Koter, A., Rogers, C., Ramírez-Tannus, M. C., Guo, D., & Azatyan, N. (2024). The early evolution of young massive clusters: II. the kinematic history of NGC 6618/M 17. Astronomy and Astrophysics, 681, Article A21. https://doi.org/10.1051/0004-6361/202347383
    • Stoop, M., de Koter, A., Kaper, L., Brands, S., Portegies Zwart, S., Sana, H., Stoppa, F., Gieles, M., Mahy, L., Shenar, T., Guo, D., Nelemans, G., & Rieder, S. (2024). Two waves of massive stars running away from the young cluster R136. Nature, 634(8035), 809-812. https://doi.org/10.1038/s41586-024-08013-8 [details]
      • Downloads

    2023

    • Brands, S. A., de Koter, A., Bestenlehner, J. M., Crowther, P. A., Kaper, L., Caballero-Nieves, S. M., & Gräfener, G. (2023). Extinction towards the cluster R136 in the Large Magellanic Cloud: An extinction law from the near-infrared to the ultraviolet. Astronomy & Astrophysics, 673, Article A132. https://doi.org/10.1051/0004-6361/202245536 [details]
    • Farhang, A., Smoker, J., Cox, N. L. J., Cami, J., Linnartz, H., van Loon, J. T., Cordiner, M. A., Sarre, P. J., Khosroshahi, H. G., Ehrenfreund, P., Foing, B. H., Kaper, L., & Laverick, M. (2023). The EDIBLES survey: VI. Searching for time variations of interstellar absorption features. Astronomy & Astrophysics, 678, Article A148. https://doi.org/10.1051/0004-6361/202037581 [details]
    • Nikoghosyan, E. H., Azatyan, N. M., Andreasyan, D. H., Kaper, L., Yeghikyan, A. G., Baghdasaryan, D. S., & Harutyunyan, N. A. (2023). New eruptive variable(s) in the RAFGL 7009S H II region. Monthly Notices of the Royal Astronomical Society, 522(2), 2171-2180. https://doi.org/10.1093/mnras/stad1111 [details]
    • O'Connor, B., Brink, J., Buckley, D. A. H., Mukai, K., Kouveliotou, C., Göğüş, E., Potter, S. B., Woudt, P., Lien, A., Levan, A., Kargaltsev, O., Baring, M. G., Bellm, E., Cenko, S. B., Evans, P. A., Granot, J., Hailey, C., Harrison, F., Hartmann, D., ... Younes, G. (2023). Identification of 1RXS J165424.6-433758 as a Polar Cataclysmic Variable. Astrophysical Journal, 957(2), Article 89. https://doi.org/10.3847/1538-4357/acf831 [details]
    • O'Connor, B., Göğüş, E., Hare, J., Mukai, K., Huppenkothen, D., Brink, J., Buckley, D. A. H., Levan, A., Baring, M. G., Stewart, R., Kouveliotou, C., Woudt, P., Bellm, E., Cenko, S. B., Evans, P. A., Granot, J., Hailey, C., Harrison, F., Hartmann, D., ... Younes, G. (2023). Swift Deep Galactic Plane Survey classification of Swift J170800−402551.8 as a candidate intermediate polar cataclysmic variable. Monthly Notices of the Royal Astronomical Society, 525(4), 5015-5024. https://doi.org/10.1093/mnras/stad2633 [details]
    • O'Connor, B., Kouveliotou, C., Evans, P. A., Gorgone, N., van Kooten, A. J., Gagnon, S., Yang, H., Baring, M. G., Bellm, E., Beniamini, P., Brink, J., Buckley, D. A. H., Cenko, S. B., Egbo, O. D., Göğüş, E., Granot, J., Hailey, C., Hare, J., Harrison, F., ... Younes, G. (2023). The Swift Deep Galactic Plane Survey (DGPS) Phase I catalog. The Astrophysical Journal. Supplement Series, 269(2), Article 49. https://doi.org/10.3847/1538-4365/ad0228 [details]
    • Poorta, J., Ramírez-Tannus, M. C., de Koter, A., Backs, F., Derkink, A., Bik, A., & Kaper, L. (2023). Massive pre-main-sequence stars in M17: First and second overtone CO bandhead emission and the thermal infrared. Astronomy and Astrophysics, 676, Article A122. https://doi.org/10.1051/0004-6361/202245658 [details]
    • Stoop, M., Kaper, L., de Koter, A., Guo, D., Lamers, H. J. G. L. M., & Rieder, S. (2023). The early evolution of young massive clusters: The kinematic history of NGC 6611/M16. Astronomy & Astrophysics, 670, Article A108. https://doi.org/10.1051/0004-6361/202244511 [details]
    • Vink, J. S., Sana, H., van Loon, J. T., Götberg, Y., Backs, F., Brands, S. A., Geen, S., Kaper, L., Keszthelyi, Z., de Koter, A., Laplace, E., de Mink, S. E., Ramirez-Tannus, M. C., Shenar, T., Sudnik, N., Tramper, F., & XShootU (2023). X-Shooting ULLYSES: Massive stars at low metallicity: I. Project description. Astronomy & Astrophysics, 675, Article A154. https://doi.org/10.1051/0004-6361/202245650 [details]

    2022

    • Brands, S. A., de Koter, A., Bestenlehner, J. M., Crowther, P. A., Sundqvist, J. O., Puls, J., Caballero-Nieves, S. M., Abdul-Masih, M., Driessen, F. A., García, M. G., Geen, S., Gräfener, G., Hawcroft, C., Kaper, L., Keszthelyi, Z., Langer, N., Sana, H., Schneider, F. R. N., Shenar, T., & Vink, J. S. (2022). The R136 star cluster dissected with Hubble Space Telescope/STIS. III: The most massive stars and their clumped winds. Astronomy & Astrophysics, 663, Article A36. https://doi.org/10.1051/0004-6361/202142742 [details]
      • Related datasets
        • Brands, S. A., De Koter, A., Bestenlehner, J. M., Crowther, P. A., Sundqvist, J. O., Puls, J., Caballero-Nieves, S. M., Abdul-Masih, M., Driessen, F. A., García, M., Geen, S., Gräfener, G., Hawcroft, C., Kaper, L., Keszthelyi, Z., Langer, N., Sana, H., Schneider, F. R. N., Shenar, T. & Vink, J. S. (2022). The R136 star cluster dissected with Hubble Space Telescope/STIS. III. The most massive stars and their clumped winds. Zenodo. https://doi.org/10.5281/zenodo.6353513
    • Moss, V. A., Balaguer-Núñez, L., Bolejko, K., Burtscher, L., Carr, A., Di Teodoro, E. M., Gregory, B., Hanko, E., Hill, A. S., Hughes, A., Kaper, L., Kerrison, E. F., Lockman, F. J., Lowson, N., & Stevens, A. R. H. (2022). Around the hybrid conference world in the COVID-19 era. Nature Astronomy, 6(10), 1105-1109. https://doi.org/10.1038/s41550-022-01806-9 [details]
    • O'Connor, B., Göǧüş, E., Huppenkothen, D., Kouveliotou, C., Gorgone, N., Townsend, L. J., Calamida, A., Fruchter, A., Buckley, D. A. H., Baring, M. G., Kennea, J. A., Younes, G., Arzoumanian, Z., Bellm, E., Cenko, S. B., Gendreau, K., Granot, J., Hailey, C., Harrison, F., ... Woudt, P. (2022). Identification of an X-Ray Pulsar in the BeXRB System IGR J18219-1347. Astrophysical Journal, 927(2), Article 139. https://doi.org/10.3847/1538-4357/ac5032 [details]
    • Shepard, K., Gies, D. R., Kaper, L., & de Koter, A. (2022). Spectroscopic Line Modeling of the Fastest Rotating O-type Stars. Astrophysical Journal, 931, Article 931. https://doi.org/10.3847/1538-4357/ac66e6 [details]

    2021

    2020

    • Ramírez-Tannus, M. C., Poorta, J., Bik, A., Kaper, L., de Koter, A., De Ridder, J., Beuther, H., Brandner, W., Davies, B., Gennaro, M., Guo, D., Henning, T., Linz, H., Naylor, T., Pasquali, A., Ramírez-Agudelo, O. H., & Sana, H. (2020). The young stellar content of the giant H II regions M 8, G333.6-0.2, and NGC 6357 with VLT/KMOS. Astronomy & Astrophysics, 633, Article A155. https://doi.org/10.1051/0004-6361/201935941 [details]
      • Related datasets
        • Ramírez-Tannus, M. C., Ramírez-Agudelo, O. H., Poorta, J., Bik, A., Kaper, L., de Koter, A., De Ridder, J., Beuther, H., Brandner, W., Davies, B., Gennaro, M., Guo, D., Henning, T., Linz, H., Naylor, T., Pasquali, A. & Sana, H. (2020). M8, G333.6-0.2 and NGC6357 young stars : J/A+A/633/A155. Centre de Donnees Strasbourg (CDS). https://doi.org/10.26093/cds/vizier.36330155
    • Shepard, K., Gies, D. R., Lester, K. V., Wang, L., Guo, Z., Kaper, L., De Koter, A., & Sana, H. (2020). HST/COS Spectra of the Wind Lines of VFTS 102 and 285. Astrophysical Journal, 888(2), Article 82. https://doi.org/10.3847/1538-4357/ab5a82 [details]
    • van Gelder, M. L., Kaper, L., Japelj, J., Ramírez-Tannus, M. C., Ellerbroek, L. E., Barbá, R. H., Bestenlehner, J. M., Bik, A., Gräfener, G., de Koter, A., de Mink, S. E., Sabbi, E., Sana, H., Sewiło, M., Vink, J. S., & Walborn, N. R. (2020). VLT/X-shooter spectroscopy of massive young stellar objects in the 30 Doradus region of the Large Magellanic Cloud. Astronomy & Astrophysics, 636, Article A54. https://doi.org/10.1051/0004-6361/201936361 [details]
      • Related datasets
        • van Gelder, M. L., Kaper, L., Japelj, J., Ellerbroek, L. E., Bestenlehner, J. M., Bik, A., de Koter, A., de Mink, S., Sabbi, E., Sana, H., Vink, J. S., Walborn, N. R., Ramírez-Tannus, M. C., Barbá, R. H., Gräfener, G. & Sewiło, M. (2020). Massive young stellar objects in 30 Doradus : J/A+A/636/A54. Centre de Donnees Strasbourg (CDS). https://doi.org/10.26093/cds/vizier.36360054

    2019

    • Bolmer, J., Ledoux, C., Wiseman, P., De Cia, A., Selsing, J., Schady, P., Greiner, J., Savaglio, S., Burgess, J. M., D'Elia, V., Fynbo, J. P. U., Goldoni, P., Hartmann, D. H., Heintz, K. E., Jakobsson, P., Japelj, J., Kaper, L., Tanvir, N. R., Vreeswijk, P. M., & Zafar, T. (2019). Evidence for diffuse molecular gas and dust in the hearts of gamma-ray burst host galaxies: Unveiling the nature of high-redshift damped Lyman-α systems. Astronomy & Astrophysics, 623, Article A43. https://doi.org/10.1051/0004-6361/201834422 [details]
    • Gorgone, N. M., Kouveliotou, C., Negoro, H., Wijers, R. A. M. J., Bozzo, E., Guiriec, S., Bult, P., Huppenkothen, D., Göğüş, E., Bahramian, A., Kennea, J., Linford, J. D., Miller-Jones, J., Baring, M. G., Beniamini, P., Chakrabarty, D., Granot, J., Hailey, C., Harrison, F. A., ... Younes, G. A. (2019). Discovery and Identification of MAXI J1621-501 as a Type I X-Ray Burster with a Super-orbital Period. Astrophysical Journal, 884(2), Article 168. https://doi.org/10.3847/1538-4357/ab3e43 [details]
    • Heintz, K. E., Bolmer, J., Ledoux, C., Noterdaeme, P., Krogager, J.-K., Fynbo, J. P. U., Jakobsson, P., Covino, S., D'Elia, V., De Pasquale, M., Hartmann, D. H., Izzo, L., Japelj, J., Kann, D. A., Kaper, L., Petitjean, P., Rossi, A., Salvaterra, R., Schady, P., ... Zafar, T. (2019). New constraints on the physical conditions in H2-bearing GRB-host damped Lyman-α absorbers. Astronomy & Astrophysics, 629, Article A131. https://doi.org/10.1051/0004-6361/201936250 [details]
      • Related datasets
        • Heintz, K. E., Bolmer, J., Ledoux, C., Noterdaeme, P., Krogager, J.-K., Jakobsson, P., Covino, S., D'Elia, V., Hartmann, D. H., Izzo, L., Japelj, J., Kann, D. A., Kaper, L., Petitjean, P., Rossi, A., Salvaterra, R., Schady, P., Selsing, J., Starling, R., … de Ugarte Postigo, U. A. (2019). Reduced X-shooter spectra of GRB 190114A : J/A+A/629/A131. Centre de Donnees Strasbourg (CDS). https://doi.org/10.26093/cds/vizier.36290131
    • Heintz, K. E., Ledoux, C., Fynbo, J. P. U., Jakobsson, P., Noterdaeme, P., Krogager, J-K., Bolmer, J., Møller, P., Vergani, S. D., Watson, D., Zafar, T., De Cia, A., Tanvir, N. R., Malesani, D. B., Japelj, J., Covino, S., & Kaper, L. (2019). Cold gas in the early Universe: Survey for neutral atomic-carbon in GRB host galaxies at 1 < z< 6 from optical afterglow spectroscopy. Astronomy & Astrophysics, 621, Article A20. https://doi.org/10.1051/0004-6361/201834246 [details]
    • Heintz, K. E., Zafar, T., De Cia, A., Vergani, S. D., Jakobsson, P., Fynbo, J. P. U., Watson, D., Japelj, J., Møller, P., Covino, S., Kaper, L., & Andersen, A. C. (2019). On the dust properties of high-redshift molecular clouds and the connection to the 2175 Å extinction bump. Monthly Notices of the Royal Astronomical Society, 486(2), 2063-2074. https://doi.org/10.1093/mnras/stz1012 [details]
    • Izzo, L., de Ugarte Postigo, A., Maeda, K., Thöne, C. C., Kann, D. A., Della Valle, M., Sagues Carracedo, A., Michałowski, M. J., Schady, P., Schmidl, S., Selsing, J., Starling, R. L. C., Suzuki, A., Bensch, K., Bolmer, J., Campana, S., Cano, Z., Covino, S., Fynbo, J. P. U., ... Wiersema, K. (2019). Signatures of a jet cocoon in early spectra of a supernova associated with a γ-ray burst. Nature, 565(7739), 324-327. https://doi.org/10.1038/s41586-018-0826-3 [details]
    • Japelj, J., Laigle, C., Puech, M., Pichon, C., Rahmani, H., Dubois, Y., Devriendt, J. E. G., Petitjean, P., Hammer, F., Gendron, E., Kaper, L., Morris, S., Pirzkal, N., Sánchez-Janssen, R., Slyz, A., Vergani, S. D., & Yang, Y. (2019). Simulating MOS science on the ELT: Lyα forest tomography. Astronomy & Astrophysics, 632, Article A94. https://doi.org/10.1051/0004-6361/201936048 [details]
    • Rouco Escorial, A., Wijnands, R., Ootes, L. S., Degenaar, N., Snelders, M., Kaper, L., Cackett, E. M., & Homan, J. (2019). Quiescent X-ray variability in the neutron star Be/X-ray transient GRO J1750-27. Astronomy & Astrophysics, 630, Article A105. https://doi.org/10.1051/0004-6361/201834327 [details]
    • Selsing, J., Malesani, D., Goldoni, P., Fynbo, J. P. U., Krühler, T., Antonelli, L. A., Arabsalmani, M., Bolmer, J., Cano, Z., Christensen, L., Covino, S., D'Avanzo, P., D'Elia, V., De Cia, A., de Ugarte Postigo, A., Flores, H., Friis, M., Gomboc, A., Greiner, J., ... Zafar, T. (2019). The X-shooter GRB afterglow legacy sample (XS-GRB). Astronomy & Astrophysics, 623, Article A92. https://doi.org/10.1051/0004-6361/201832835 [details]
    • Tanvir, N. R., Fynbo, J. P. U., de Ugarte Postigo, A., Japelj, J., Wiersema, K., Malesani, D., Perley, D. A., Levan, A. J., Selsing, J., Cenko, S. B., Kann, D. A., Milvang-Jensen, B., Berger, E., Cano, Z., Chornock, R., Covino, S., Cucchiara, A., D'Elia, V., Gargiulo, A., ... Xu, D. (2019). The fraction of ionizing radiation from massive stars that escapes to the intergalactic medium. Monthly Notices of the Royal Astronomical Society, 483(4), 5380-5408. https://doi.org/10.1093/mnras/sty3460 [details]

    2018

    • Heintz, K. E., Malesani, D., Wiersema, K., Jakobsson, P., Fynbo, J. P. U., Savaglio, S., Cano, Z., Covino, S., D'Elia, V., Gomboc, A., Hammer, F., Kaper, L., Milvang-Jensen, B., Møller, P., Piranomonte, S., Selsing, J., Rhodin, N. H. P., Tanvir, N. R., Thöne, C. C., ... Watson, D. (2018). The luminous, massive and solar metallicity galaxy hosting the Swift γ-ray burst GRB 160804A at z = 0.737. Monthly Notices of the Royal Astronomical Society, 474(2), 2738-2749. https://doi.org/10.1093/mnras/stx2895 [details]
    • Heintz, K. E., Watson, D., Jakobsson, P., Fynbo, J. P. U., Bolmer, J., Arabsalmani, M., Cano, Z., Covino, S., D'Elia, V., Gomboc, A., Japelj, J., Kaper, L., Krogager, J-K., Pugliese, G., Sánchez-Ramírez, R., Selsing, J., Sparre, M., Tanvir, N. R., Thöne, C. C., ... Vergani, S. D. (2018). Highly ionized metals as probes of the circumburst gas in the natal regions of gamma-ray bursts. Monthly Notices of the Royal Astronomical Society, 479(3), 3456-3476. Advance online publication. https://doi.org/10.1093/mnras/sty1447 [details]
    • Hernandez, S., Larsen, S., Trager, S., Kaper, L., & Groot, P. (2018). Chemical abundances of globular clusters in NGC 5128 (Centaurus A). Monthly Notices of the Royal Astronomical Society, 476(4), 5189-5215. https://doi.org/10.1093/mnras/sty519 [details]
    • Hernandez, S., Larsen, S., Trager, S., Kaper, L., & Groot, P. (2018). Metallicities of young massive clusters in NGC 5236 (M83). Monthly Notices of the Royal Astronomical Society, 473(1), 826-837. https://doi.org/10.1093/mnras/stx2397 [details]
    • Japelj, J., Vergani, S. D., Salvaterra, R., Renzo, M., Zapartas, E., de Mink, S. E., Kaper, L., & Zibetti, S. (2018). Host galaxies of SNe Ic-BL with and without long gamma-ray bursts. Astronomy & Astrophysics, 617, Article A105. https://doi.org/10.1051/0004-6361/201833209 [details]
    • Oostrum, L. C., Ochsendorf, B. B., Kaper, L., & Tielens, A. G. G. M. (2018). Unidentified emission features in the R Coronae Borealis star V854 Centauri. Astronomy & Astrophysics, 610, Article L6. https://doi.org/10.1051/0004-6361/201731549 [details]
    • Ramírez-Tannus, M. C., Cox, N. L. J., Kaper, L., & de Koter, A. (2018). Diffuse interstellar bands in the H II region M17: Insights into their relation with the total-to-selective visual extinction Rv. Astronomy & Astrophysics, 620, Article A52. https://doi.org/10.1051/0004-6361/201833340 [details]
    • Selsing, J., Krühler, T., Malesani, D., D'Avanzo, P., Schulze, S., Vergani, S. D., Palmerio, J., Japelj, J., Milvang-Jensen, B., Watson, D., Jakobsson, P., Bolmer, J., Cano, Z., Covino, S., D'Elia, V., de Ugarte Postigo, A., Fynbo, J. P. U., Gomboc, A., Heintz, K. E., ... Wiersema, K. (2018). The host galaxy of the short GRB 111117A at z = 2.211: Impact on the short GRB redshift distribution and progenitor channels. Astronomy & Astrophysics, 616, Article A48. https://doi.org/10.1051/0004-6361/201731475 [details]
    • Tanvir, N. R., Laskar, T., Levan, A. J., Perley, D. A., Zabl, J., Fynbo, J. P. U., Rhoads, J., Cenko, S. B., Greiner, J., Wiersema, K., Hjorth, J., Cucchiara, A., Berger, E., Bremer, M. N., Cano, Z., Cobb, B. E., Covino, S., D’Elia, V., Fong, W., ... Xu, D. (2018). The Properties of GRB 120923A at a Spectroscopic Redshift of z ≈ 7.8. Astrophysical Journal, 865(2), Article 107. https://doi.org/10.3847/1538-4357/aadba9 [details]
    • Zafar, T., Heintz, K. E., Fynbo, J. P. U., Malesani, D., Bolmer, J., Ledoux, C., Arabsalmani, M., Kaper, L., Campana, S., Starling, R. L. C., Selsing, J., Kann, D. A., de Ugarte Postigo, A., Schweyer, T., Christensen, L., Møller, P., Japelj, J., Perley, D., Tanvir, N. R., ... Xu, D. (2018). The 2175 Å Extinction Feature in the Optical Afterglow Spectrum of GRB 180325A at z = 2.25*. Astrophysical Journal Letters, 860(2), Article L21. https://doi.org/10.3847/2041-8213/aaca3f [details]
      • Related datasets
        • Zafar, T., Heintz, K. E., Malesani, D., Bolmer, J., Ledoux, C., Arabsalmani, M., Kaper, L., Campana, S., Selsing, J., Kann, D. A., Schweyer, T., Christensen, L., Møller, P., Japelj, J., Perley, D., Tanvir, N. R., D'Avanzo, P., Hartmann, D. H., Hjorth, J., … Postigo, A. . (2019). GROND, NOT & VLT/X-shooter obs. of GRB180325A : J/ApJ/860/L21. Centre de Donnees Strasbourg (CDS). https://doi.org/10.26093/cds/vizier.18609021

    2017

    • Christensen, L., Vergani, S. D., Schulze, S., Annau, N., Selsing, J., Fynbo, J. P. U., de Ugarte Postigo, A., Cañameras, R., Lopez, S., Passi, D., Cortés-Zuleta, P., Ellison, S. L., D'Odorico, V., Becker, G., Berg, T. A. M., Cano, Z., Covino, S., Cupani, G., D'Elia, V., ... Worseck, G. (2017). Solving the conundrum of intervening strong Mg II absorbers towards gamma-ray bursts and quasars. Astronomy & Astrophysics, 608, Article A84. https://doi.org/10.1051/0004-6361/201731382 [details]
    • Covino, S., Wiersema, K., Fan, Y. Z., Toma, K., Higgins, A. B., Melandri, A., D'Avanzo, P., Mundell, C. G., Palazzi, E., Tanvir, N. R., Bernardini, M. G., Branchesi, M., Brocato, E., Campana, S., di Serego Alighieri, S., Götz, D., Fynbo, J. P. U., Gao, W., Gomboc, A., ... Wijers, R. A. M. J. (2017). The unpolarized macronova associated with the gravitational wave event GW 170817. Nature Astronomy, 1(11), 791-794. https://doi.org/10.1038/s41550-017-0285-z [details]
    • Cox, N. L. J., Cami, J., Farhang, A., Smoker, J., Monreal-Ibero, A., Lallement, R., Sarre, P. J., Marshall, C. C. M., Smith, K. T., Evans, C. J., Royer, P., Linnartz, H., Cordiner, M. A., Joblin, C., van Loon, J. T., Foing, B. H., Bhatt, N. H., Bron, E., Elyajouri, M., ... Spaans, M. (2017). The ESO Diffuse Interstellar Bands Large Exploration Survey (EDIBLES) . I. Project description, survey sample, and quality assessment. Astronomy & Astrophysics, 606, Article A76. https://doi.org/10.1051/0004-6361/201730912 [details]
    • Hernandez, S., Larsen, S., Trager, S., Groot, P., & Kaper, L. (2017). Chemical abundances of two extragalactic young massive clusters. Astronomy & Astrophysics, 603, Article A119. https://doi.org/10.1051/0004-6361/201730550 [details]
    • Hyde, E. A., Russell, D. M., Ritter, A., Filipović, M. D., Kaper, L., Grieve, K., & O'Brien, A. N. (2017). LMC X-1: A New Spectral Analysis of the O-star in the Binary and Surrounding Nebula. Publications of the Astronomical Society of the Pacific, 129(979), Article 94201. https://doi.org/10.1088/1538-3873/aa7407 [details]
    • LIGO Scientific Collaboration and Virgo Collaboration, Fermi GBM, INTEGRAL, Icecube Collaboration, AstroSat Cadmium Zinc Telluride Imager Team, IPN Collaboration, The Insight-HXMT Collaboration, ANTARES Collaboration, The SWIFT Collaboration, AGILE Team, The 1M2H Team, The Dark Energy Camera GW-EM Collaboration and the DES Collaboration, The DLT40 Collaboration, The GRAvitational Wave Inaf TeAm (GRAWITA), The Fermi Large Area Telescope Collaboration, ATCA: Australia Telescope Compact Array, ASKAP: Australian SKA Pathfinder, Las Cumbres Observatory Group, OzGrav, ... SKA South Africa/MeerKAT (2017). Multi-messenger Observations of a Binary Neutron Star Merger. Astrophysical Journal Letters, 848(2), Article L12. https://doi.org/10.3847/2041-8213/aa91c9 [details]
    • Ramírez-Tannus, M. C., Kaper, L., de Koter, A., Tramper, F., Bik, A., Ellerbroek, L. E., Ochsendorf, B. B., Ramírez-Agudelo, O. H., & Sana, H. (2017). Massive pre-main-sequence stars in M17. Astronomy & Astrophysics, 604, Article A78. https://doi.org/10.1051/0004-6361/201629503 [details]
    • Sana, H., Ramírez-Tannus, M. C., de Koter, A., Kaper, L., Tramper, F., & Bik, A. (2017). A dearth of short-period massive binaries in the young massive star forming region M 17: Evidence for a large orbital separation at birth? Astronomy & Astrophysics, 599, Article L9. https://doi.org/10.1051/0004-6361/201630087 [details]
    • Wehres, N., Ochsendorf, B. B., Tielens, A. G. G. M., Cox, N. L. J., Kaper, L., Bally, J., & Snow, T. P. (2017). Medium-resolution échelle spectroscopy of the Red Square Nebula, MWC 922. Astronomy & Astrophysics, 601, Article A69. https://doi.org/10.1051/0004-6361/201628723 [details]

    2016

    • Ubachs, W., Bagdonaite, J., Salumbides, E. J., Murphy, M. T., & Kaper, L. (2016). Colloquium: Search for a drifting proton-electron mass ratio from H2. Reviews of Modern Physics, 88(2), Article 21003. https://doi.org/10.1103/RevModPhys.88.021003 [details]
    • Wade, G. A., Neiner, C., Alecian, E., Grunhut, J. H., Petit, V., Batz, B. D., Bohlender, D. A., Cohen, D. H., Henrichs, H. F., Kochukhov, O., Landstreet, J. D., Manset, N., Martins, F., Mathis, S., Oksala, M. E., Owocki, S. P., Rivinius, T., Shultz, M. E., Sundqvist, J. O., ... Yakunin, I. (2016). The MiMeS survey of magnetism in massive stars: introduction and overview. Monthly Notices of the Royal Astronomical Society, 456(1), 2-22. https://doi.org/10.1093/mnras/stv2568 [details]

    2015

    • Ellerbroek, L. E., Benisty, M., Kraus, S., Perraut, K., Kluska, J., de Bouquin, J. B., Borges Fernandes, M., Domiciano de Souza, A., Maaskant, K. M., Kaper, L., Tramper, F., Mourard, D., Tallon-Bosc, I., ten Brummelaar, T., Sitko, M. L., Lynch, D. K., & Russell, R. W. (2015). A resolved, au-scale gas disk around the B[e] star HD 50138. Astronomy & Astrophysics, 573, A77. https://doi.org/10.1051/0004-6361/201424143 [details]
    • Friis, M., De Cia, A., Krühler, T., Fynbo, J. P. U., Ledoux, C., Vreeswijk, P. M., Watson, D. J., Malesani, D., Gorosabel, J., Starling, R. L. C., Jakobsson, P., Varela, K., Wiersema, K., Drachmann, A. P., Trotter, A., Thöne, C. C., de Ugarte Postigo, A., D'Elia, V., Elliott, J., ... Vergani, S. D. (2015). The warm, the excited, and the molecular gas: GRB 121024A shining through its star-forming galaxy. Monthly Notices of the Royal Astronomical Society, 451(1), 167-183. https://doi.org/10.1093/mnras/stv960 [details]
    • Hartoog, O. E., Fynbo, J. P. U., Kaper, L., De Cia, A., & Bagdonaite, J. (2015). Galaxy counterparts of metal-rich damped Lyα absorbers: the case of J205922.4-052842. Monthly Notices of the Royal Astronomical Society, 447(3), 2738-2752. https://doi.org/10.1093/mnras/stu2578 [details]
    • Hartoog, O. E., Malesani, D., Fynbo, J. P. U., Goto, T., Krühler, T., Vreeswijk, P. M., De Cia, A., Xu, D., Møller, P., Covino, S., D’Elia, V., Flores, H., Goldoni, P., Hjorth, J., Jakobsson, J., Krogager, J. -K., Kaper, L., Ledoux, C., Levan, A. J., ... Aghanim, N. (2015). VLT/X-Shooter spectroscopy of the afterglow of the Swift GRB 130606A. Chemical abundances and reionisation at z ~ 6. Astronomy & Astrophysics, 580, Article A139. https://doi.org/10.1051/0004-6361/201425001 [details]
    • Japelj, J., Covino, S., Gomboc, A., Vergani, S. D., Goldoni, P., Selsing, J., Cano, Z., D’Elia, V., Flores, H., Fynbo, J. P. U., Hammer, F., Hjorth, J., Jakobsson, P., Kaper, L., Kopač, D., Krühler, T., Melandri, A., Piranomonte, S., Sánchez-Ramírez, R., ... Wijers, R. A. M. J. (2015). Spectrophotometric analysis of gamma-ray burst afterglow extinction curves with X-Shooter. Astronomy & Astrophysics, 579, Article A74. https://doi.org/10.1051/0004-6361/201525665 [details]
    • Krühler, T., Malesani, D., Fynbo, J. P. U., Hartoog, O. E., Hjorth, J., Jakobsson, P., Perley, D. A., Rossi, A., Schady, P., Schulze, S., Tanvir, N. R., Vergani, S. D., Wiersema, K., Afonso, P. M. J., Bolmer, J., Cano, Z., Covino, S., D’Elia, V., de Ugarte Postigo, A., ... Xu, D. (2015). GRB hosts through cosmic time. VLT/X-Shooter emission-line spectroscopy of 96 γ-ray-burst-selected galaxies at 0.1 <z < 3.6. Astronomy & Astrophysics, 581, Article A125. https://doi.org/10.1051/0004-6361/201425561 [details]
    • Tramper, F., Sana, H., Fitzsimons, N. E., de Koter, A., Kaper, L., Mahy, L., & Moffat, A. (2015). The mass of the very massive binary WR21a. Monthly Notices of the Royal Astronomical Society, 455(2), 1275-1281. https://doi.org/10.1093/mnras/stv2373 [details]
    • Tramper, F., Straal, S. M., Gräfener, G., Kaper, L., de Koter, A., Langer, N., Sana, H., & Vink, J. S. (2015). The properties of single WO stars. Proceedings of the National Academy of Sciences of the United States of America, 307, 144-145. https://doi.org/10.1017/S1743921314006590 [details]
    • Tramper, F., Straal, S. M., Sanyal, D., Sana, H., de Koter, A., Gräfener, G., Langer, N., Vink, J. S., de Mink, S. E., & Kaper, L. (2015). Massive stars on the verge of exploding: the properties of oxygen sequence Wolf-Rayet stars. Astronomy & Astrophysics, 581, Article A110. https://doi.org/10.1051/0004-6361/201425390 [details]

    2014

    • Cirasuolo, M., Afonso, J., Carollo, M., Flores, H., Maiolino, R., Kaper, L., Lemasle, B., & MOONS-VLT (2014). MOONS: the Multi-Object Optical and Near-infrared Spectrograph for the VLT. In S. K. Ramsay, I. S. McLean, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy V: 22-26 June 2014, Montréal, Canada (Vol. 1). Article 91470N (Proceedings of SPIE, the International Society for Optical Engineering; Vol. 9147). SPIE. https://doi.org/10.1117/12.2056012 [details]
    • Cox, N. L. J., Cami, J., Kaper, L., Ehrenfreund, P., Foing, B. H., Ochsendorf, B. B., van Hooff, S. H. M., & Salama, F. (2014). VLT/X-Shooter survey of near-infrared diffuse interstellar bands. Astronomy & Astrophysics, 569, A117. https://doi.org/10.1051/0004-6361/201323061 [details]
    • D'Elia, V., Fynbo, J. P. U., Goldoni, P., Covino, S., de Ugarte Postigo, A., Ledoux, C., Calura, F., Gorosabel, J., Malesani, D., Matteucci, F., Sánchez-Ramírez, R., Savaglio, S., Castro-Tirado, A. J., Hartoog, O. E., Kaper, L., Muñoz-Darias, T., Pian, E., Piranomonte, S., Tagliaferri, G., ... Xu, D. (2014). VLT/X-shooter spectroscopy of the GRB 120327A afterglow. Astronomy & Astrophysics, 564, A38. https://doi.org/10.1051/0004-6361/201323057 [details]
    • Ellerbroek, L. E., Podio, L., Dougados, C., Cabrit, S., Sitko, M. L., Sana, H., Kaper, L., de Koter, A., Klaassen, P. D., Mulders, G. D., Mendigutía, I., Grady, C. A., Grankin, K., van Winckel, H., Bacciotti, F., Russell, R. W., Lynch, D. K., Hammel, H. B., Beerman, L. C., ... Grindlay, J. (2014). Relating jet structure to photometric variability: the Herbig Ae star HD 163296. Astronomy & Astrophysics, 563, A87. https://doi.org/10.1051/0004-6361/201323092 [details]
    • Evans, C. J., Puech, M., Barbuy, B., Bonifacio, P., Cuby, J. G., Kaper, L., Lemasle, B., Mei, S., & ELT-MOSAIC Collaboration (2014). Science case and requirements for the MOSAIC concept for a multi-object spectrograph for the European Extremely Large Telescope. In S. K. Ramsay, I. S. McLean, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy V: 22-26 June 2014, Montréal, Canada (Vol. 5). Article 914796 (Proceedings of SPIE, the International Society for Optical Engineering; Vol. 9147). SPIE. https://doi.org/10.1117/12.2055857 [details]
    • Fynbo, J. P. U., Krühler, T., Leighly, K., Ledoux, C., Vreeswijk, P. M., Schulze, S., Noterdaeme, P., Watson, D., Wijers, R. A. M. J., Bolmer, J., Cano, Z., Christensen, L., Covino, S., D’Elia, V., Flores, H., Friis, M., Goldoni, P., Greiner, J., Hammer, F., ... Zafar, T. (2014). The mysterious optical afterglow spectrum of GRB 140506A at z = 0.889. Astronomy & Astrophysics, 572, Article A12. https://doi.org/10.1051/0004-6361/201424726 [details]
    • Hammer, F., Barbuy, B., Cuby, J. G., Kaper, L., Morris, S., Evans, C. J., Jagourel, P., Dalton, G., Rees, P., Puech, M., Rodriques, M., Pearson, D., & Disseau, K. (2014). MOSAIC at the E-ELT: A multi-object spectrograph for astrophysics, IGM and cosmology. In S. K. Ramsay, I. S. McLean, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy V: 22-26 June 2014, Montréal, Canada (Vol. 2). Article 914727 (Proceedings of SPIE, the International Society for Optical Engineering; Vol. 9147). SPIE. https://doi.org/10.1117/12.2055148 [details]
    • Levan, A. J., Tanvir, N. R., Starling, R. L. C., Wiersema, K., Page, K. L., Perley, D. A., Schulze, S., Wynn, G. A., Chornock, R., Hjorth, J., Cenko, S. B., Fruchter, A. S., O'Brien, P. T., Brown, G. C., Tunnicliffe, R. L., Malesani, D., Jakobsson, P., Watson, D., Berger, E., ... Zauderer, B. A. (2014). A New Population of Ultra-long Duration Gamma-Ray Bursts. Astrophysical Journal, 781(1), Article 13. https://doi.org/10.1088/0004-637X/781/1/13 [details]
    • Meyer, DM-A., Mackey, J., Langer, N., Gvaramadze, V. V., Mignone, A., Izzard, R. G., & Kaper, L. (2014). Models of the circumstellar medium of evolving, massive runaway stars moving through the Galactic plane. Monthly Notices of the Royal Astronomical Society, 444(3), 2754-2775. https://doi.org/10.1093/mnras/stu1629 [details]
    • Ochsendorf, B. B., Cox, N. L. J., Krijt, S., Salgado, F., Berné, O., Bernard, J. P., Kaper, L., & Tielens, A. G. G. M. (2014). Blowing in the wind: The dust wave around σ Orionis AB. Astronomy & Astrophysics, 563, A65. https://doi.org/10.1051/0004-6361/201322873 [details]
    • Ochsendorf, B. B., Verdolini, S., Cox, N. L. J., Berné, O., Kaper, L., & Tielens, A. G. G. M. (2014). Radiation-pressure-driven dust waves inside bursting interstellar bubbles. Astronomy & Astrophysics, 566, A75. https://doi.org/10.1051/0004-6361/201423545 [details]
    • Pita, S., Goldoni, P., Boisson, C., Lenain, J-P., Punch, M., Gérard, L., Hammer, F., Kaper, L., & Sol, H. (2014). Spectroscopy of high-energy BL Lacertae objects with X-shooter on the VLT. Astronomy & Astrophysics, 565, A12. https://doi.org/10.1051/0004-6361/201323071 [details]
    • Schulze, S., et al., U., Ellerbroek, L. E., Kaper, L., & Hartoog, O. E. (2014). GRB 120422A/SN 2012bz: Bridging the gap between low- and high-luminosity gamma-ray bursts. Astronomy & Astrophysics, 566, A102. https://doi.org/10.1051/0004-6361/201423387 [details]
    • Sparre, M., Hartoog, O. E., Krühler, T., Fynbo, J. P. U., Watson, D. J., Wiersema, K., D'Elia, V., Zafar, T., Afonso, P. M. J., Covino, S., de Ugarte Postigo, A., Flores, H., Goldoni, P., Greiner, J., Hjorth, J., Jakobsson, P., Kaper, L., Klose, S., Levan, A. J., ... Wijers, R. A. M. J. (2014). The Metallicity and Dust Content of a Redshift 5 Gamma-Ray Burst Host Galaxy. Astrophysical Journal, 785(2), 150. https://doi.org/10.1088/0004-637X/785/2/150 [details]
    • Tramper, F., Sana, H., de Koter, A., Kaper, L., & Ramírez-Agudelo, O. H. (2014). The properties of ten O-type stars in the low-metallicity galaxies IC 1613, WLM, and NGC 3109. Astronomy & Astrophysics, 572, Article A36. https://doi.org/10.1051/0004-6361/201424312 [details]
    • de Ugarte Postigo, A., Thöne, C. C., Rowlinson, A., García-Benito, R., Levan, A. J., Gorosabel, J., Goldoni, P., Schulze, S., Zafar, T., Wiersema, K., Sánchez-Ramírez, R., Melandri, A., D’Avanzo, P., Oates, S., D’Elia, V., de Pasquale, M., Krühler, T., van der Horst, A. J., Xu, D., ... Wijers, R. A. M. J. (2014). Spectroscopy of the short-hard GRB 130603B: The host galaxy and environment of a compact object merger. Astronomy & Astrophysics, 563, Article A62. https://doi.org/10.1051/0004-6361/201322985 [details]

    2013

    • Boley, P. A., Linz, H., van Boekel, R., Henning, T., Feldt, M., Kaper, L., Leinert, C., Müller, A., Pascucci, I., Robberto, M., Stecklum, B., Waters, L. B. F. M., & Zinnecker, H. (2013). The VLTI/MIDI survey of massive young stellar objects: Sounding the inner regions around intermediate- and high-mass young stars using mid-infrared interferometry. Astronomy & Astrophysics, 558, Article A24. https://doi.org/10.1051/0004-6361/201321539 [details]
    • Ellerbroek, L. E., Bik, A., Kaper, L., Maaskant, K. M., Paalvast, M., Tramper, F., Sana, H., Waters, L. B. F. M., & Balog, Z. (2013). RCW36: characterizing the outcome of massive star formation. Astronomy & Astrophysics, 558, A102. https://doi.org/10.1051/0004-6361/201321752 [details]
    • Ellerbroek, L. E., Podio, L., Kaper, L., Sana, H., Huppenkothen, D., de Koter, A., & Monaco, L. (2013). The outflow history of two Herbig-Haro jets in RCW 36: HH 1042 and HH 1043. Astronomy & Astrophysics, 551, 5. https://doi.org/10.1051/0004-6361/201220635 [details]
    • Hartoog, O. E., Wiersema, K., Vreeswijk, P. M., Kaper, L., Tanvir, N. R., Savaglio, S., Berger, E., Chornock, R., Covino, S., D'Elia, V., Flores, H., Fynbo, J. P. U., Goldoni, P., Gomboc, A., Melandri, A., Pozanenko, A., Schaye, J., De Ugarte Postigo, A., & Wijers, R. A. M. J. (2013). The host-galaxy response to the afterglow of GRB 100901A. Monthly Notices of the Royal Astronomical Society, 430(4), 2739-2754. https://doi.org/10.1093/mnras/stt078 [details]
    • Henrichs, H. F., de Jong, J. A., Verdugo, E., Schnerr, R. S., Neiner, C., Donati, J-F., Catala, C., Shorlin, S. L. S., Wade, G. A., Veen, P. M., Nichols, J. S., Damen, E. M. F., Talavera, A., Hill, G. M., Kaper, L., Tijani, A. M., Geers, V. C., Wiersema, K., Plaggenborg, B., & Rygl, K. L. J. (2013). Discovery of the magnetic field in the pulsating B star β Cephei. Astronomy & Astrophysics, 555, A46. https://doi.org/10.1051/0004-6361/201321584 [details]
    • Krühler, T., Ledoux, C., Fynbo, J. P. U., Vreeswijk, P. M., Schmidl, S., Malesani, D., Christensen, L., De Cia, A., Hjorth, J., Jakobsson, P., Kann, D. A., Kaper, L., Vergani, S. D., Afonso, P. M. J., Covino, S., de Ugarte Postigo, A., D'Elia, V., Filgas, R., Goldoni, P., ... Xu, D. (2013). Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36. Astronomy & Astrophysics, 557, Article A18. https://doi.org/10.1051/0004-6361/201321772 [details]
    • Lemasle, B., François, P., Genovali, K., Kovtyukh, V. V., Bono, G., Inno, L., Laney, C. D., Kaper, L., Bergemann, M., Fabrizio, M., Matsunaga, N., Pedicelli, S., Primas, F., & Romaniello, M. (2013). Galactic abundance gradients from Cepheids. α and heavy elements in the outer disk. Astronomy & Astrophysics, 558, A31. https://doi.org/10.1051/0004-6361/201322115 [details]
    • Sana, H., van Boeckel, T., Tramper, F., Ellerbroek, L. E., de Koter, A., Kaper, L., Moffat, A. F. J., Schnurr, O., Schneider, F. R. N., & Gies, D. R. (2013). R144 revealed as a double-lined spectroscopic binary. Monthly Notices of the Royal Astronomical Society. Letters, 432(1), L26-L30. https://doi.org/10.1093/mnrasl/slt029 [details]
    • Starkenburg, E., Hill, V., Tolstoy, E., François, P., Irwin, M. J., Boschman, L., Venn, K. A., de Boer, T. J. L., Lemasle, B., Jablonka, P., Battaglia, G., Groot, P., & Kaper, L. (2013). The extremely low-metallicity tail of the Sculptor dwarf spheroidal galaxy. Astronomy & Astrophysics, 549, A88. https://doi.org/10.1051/0004-6361/201220349 [details]
    • Thöne, C. C., Fynbo, J. P. U., Goldoni, P., Postigo de Ugarte, A., Campana, S., Vergani, S. D., Covino, S., Krühler, T., Kaper, L., Tanvir, N., Zafar, T., D'Elia, V., Gorosabel, J., Groot, P., Hammer, F., Jakobsson, P., Klose, S., Levan, A. J., Milvang-Jensen, B., ... Wijers, R. A. M. J. (2013). GRB 100219A with X-shooter - abundances in a galaxy at z =4.7. Monthly Notices of the Royal Astronomical Society, 428(4), 3590-3606. https://doi.org/10.1093/mnras/sts303 [details]
    • Tramper, F., Gräfener, G., Hartoog, O., Sana, H., de Koter, A., Vink, J. S., Ellerbroek, L. E., Langer, N., Garcia, M., Kaper, L., & de Mink, S. E. (2013). On the nature of WO stars: a quantitative analysis of the WO3 star DR1 in IC 1613. Astronomy & Astrophysics, 559, Article A72. https://doi.org/10.1051/0004-6361/201322155 [details]
    • Xu, D., de Ugarte Postigo, A., Leloudas, G., Krühler, T., Cano, Z., Hjorth, J., Malesani, D., Fynbo, J. P. U., Thöne, C. C., Sánchez-Ramírez, R., Schulze, S., Jakobsson, P., Kaper, L., Sollerman, J., Watson, D. J., Cabrera-Lavers, A., Cao, C., Covino, S., Flores, H., ... Zou, Y. C. (2013). Discovery of the Broad-lined Type Ic SN 2013cq Associated with the Very Energetic GRB 130427A. Astrophysical Journal, 776(2), 98. https://doi.org/10.1088/0004-637X/776/2/98 [details]

    2012

    • Bagdonaite, J., Murphy, M. T., Kaper, L., & Ubachs, W. (2012). Constraint on a variation of the proton-to-electron mass ratio from H2 absorption towards quasar Q2348-011. Monthly Notices of the Royal Astronomical Society, 421(1), 419-425. https://doi.org/10.1111/j.1365-2966.2011.20319.x [details]
    • Bufano, F., Pian, E., Sollerman, J., Benetti, S., Pignata, G., Valenti, S., Covino, S., D'Avanzo, P., Malesani, D., Cappellaro, E., Della Valle, M., Fynbo, J., Hjorth, J., Mazzali, P. A., Reichart, D. E., Starling, R. L. C., Turatto, M., Vergani, S. D., Wiersema, K., ... Wijers, R. A. M. J. (2012). The Highly Energetic Expansion of SN 2010bh Associated with GRB 100316D. Astrophysical Journal, 753(1), 67. https://doi.org/10.1088/0004-637X/753/1/67 [details]
    • Cirasuolo, M., Afonso, J., Bender, R., Bonifacio, P., Evans, C., Kaper, L., & MOONS-VLT (2012). MOONS: a multi-object optical and near-infrared spectrograph for the VLT. In I. S. McLean, S. K. Ramsay, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy IV: 1-6 July 2012, Amsterdam, Netherlands (Vol. 1). Article 84460S (Proceedings of SPIE, the International Society for Optical Engineering; Vol. 8446). SPIE. https://doi.org/10.1117/12.925871 [details]
    • Evans, C. J., Barbuy, B., Bonifacio, P., Chemla, F., Cuby, J-G., Dalton, G. B., Davies, B., Disseau, K., Dohlen, K., Flores, H., Gendron, E., Guinouard, I., Hammer, F., Hastings, P., Horville, D., Jagourel, P., Kaper, L., Laporte, P., Lee, D., ... Yang, Y. (2012). Multi-object spectroscopy with the European ELT: scientific synergies between EAGLE and EVE. In I. S. McLean, S. K. Ramsay, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy IV: 1-6 July 2012, Amsterdam, Netherlands (Vol. 5). Article 84467K (Proceedings of SPIE, the International Society for Optical Engineering; Vol. 8446). SPIE. https://doi.org/10.1117/12.924819 [details]
    • Grunhut, J. H., Wade, G. A., Sundqvist, J. O., ud-Doula, A., Neiner, C., Ignace, R., Marcolino, W. L. F., Rivinius, T., Fullerton, A., Kaper, L., Mauclaire, B., Buil, C., Garrel, T., Ribeiro, J., & Ubaud, S. (2012). Investigating the spectroscopic, magnetic and circumstellar variability of the O9 subgiant star HD 57682. Monthly Notices of the Royal Astronomical Society, 426(3), 2208-2227. https://doi.org/10.1111/j.1365-2966.2012.21799.x [details]
    • Hartoog, O. E., Sana, H., de Koter, A., & Kaper, L. (2012). First Very Large Telescope/X-shooter spectroscopy of early-type stars outside the Local Group. Monthly Notices of the Royal Astronomical Society, 422(1), 367-378. https://doi.org/10.1111/j.1365-2966.2012.20615.x [details]
    • Kaur, R., Kaper, L., Ellerbroek, L. E., Russell, D. M., Altamirano, D., Wijnands, R., Yang, Y. J., D'Avanzo, P., de Ugarte Postigo, A., Flores, H., Fynbo, J. P. U., Goldoni, P., Thöne, C. C., van der Horst, A. J., van der Klis, M., Kouveliotou, C., Wiersema, K., & Kuulkers, E. (2012). Very large telescope/X-shooter spectroscopy of the candidate black hole X-ray binary MAXI J1659-152 in outburst. Astrophysical Journal Letters, 746(2), L23. https://doi.org/10.1088/2041-8205/746/2/L23 [details]
    • Oliva, E., Diolaiti, E., Garilli, B., Gratton, R., Lorenzetti, D., Schipani, P., Scuderi, S., Vanzella, E., Cirasuolo, M., Afonso, J., Bender, R., Bonifacio, P., Kaper, L., Vanzi, L., Baffa, C., Bianco, A., Bonoli, C., Bortoletto, F., Bruno, P., ... Vitali, F. (2012). The design of the MOONS-VLT spectrometer. In I. S. McLean, S. K. Ramsay, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy IV: 1-6 July 2012, Amsterdam, Netherlands (Vol. 3). Article 84464V (Proceedings of SPIE; Vol. 8446). SPIE. https://doi.org/10.1117/12.925309 [details]
    • Wiersema, K., Curran, P., Krühler, T., Melandri, A., Rol, E., Starling, R. L. C., Tanvir, N. R., van der Horst, A. J., Covino, S., Fynbo, J. P. U., Goldoni, P., Gorosabel, J., Hjorth, J., Klose, S., Mundell, C. G., O'Brien, P. T., Palazzi, E., Wijers, R. A. M. J., D'Elia, V., ... Vergani, S. D. (2012). Detailed optical and near-infrared polarimetry, spectroscopy and broad-band photometry of the afterglow of GRB 091018: polarization evolution. Monthly Notices of the Royal Astronomical Society, 426(1), 2-22. https://doi.org/10.1111/j.1365-2966.2012.20943.x [details]
    • van der Horst, A. J., Kouveliotou, C., Gorgone, N. M., Kaneko, Y., Baring, M. G., Guiriec, S., Göğüş, E., Granot, J., Watts, A. L., Lin, L., Bhat, P. N., Bissaldi, E., Chaplin, V. L., Finger, M. H., Gehrels, N., Gibby, M. H., Giles, M. M., Goldstein, A., Gruber, D., ... Wijers, R. A. M. J. (2012). SGR J1550-5418 Bursts Detected with the Fermi Gamma-Ray Burst Monitor during its Most Prolific Activity. Astrophysical Journal, 749(2), Article 122. https://doi.org/10.1088/0004-637X/749/2/122 [details]

    2011

    • Ellerbroek, L., Kaper, L., Bik, A., de Koter, A., Horrobin, M., Puga, E., Sana, H., & Waters, L. B. F. M. (2011). The Intermediate-mass Young Stellar Object 08576nr292: discovery of a disk-jet system. Astrophysical Journal Letters, 732. https://doi.org/10.1088/2041-8205/732/1/L9 [details]
    • Fynbo, J. P. U., Ledoux, C., Noterdaeme, P., Christensen, L., Møller, P., Durgapal, A. K., Goldoni, P., Kaper, L., Krogager, J. -K., Laursen, P., Maund, J. R., Milvang-Jensen, B., Okoshi, K., Rasmussen, P. K., Thorsen, T. J., Toft, S., & Zafar, T. (2011). Galaxy counterparts of metal-rich damped Lyα absorbers: II. A solar-metallicity and dusty DLA at zabs= 2.58. Monthly Notices of the Royal Astronomical Society, 413, 2481-2488. https://doi.org/10.1111/j.1365-2966.2011.18318.x [details]
    • Kaper, L., Ellerbroek, L. E., Ochsendorf, B. B., & Caballero Pouroutidou, R. N. (2011). Studying the formation of massive stars with VLT/X-shooter. Astronomische Nachrichten, 332(3), 232-237. https://doi.org/10.1002/asna.201111524 [details]
    • Lin, L., Kouveliotou, C., Baring, M. G., van der Horst, A. J., Guiriec, S., Woods, P. M., Göğüş, E., Kaneko, Y., Scargle, J., Granot, J., Preece, R., von Kienlin, A., Chaplin, V., Watts, A. L., Wijers, R. A. M. J., Zhang, S. N., Bhat, N., Finger, M. H., Gehrels, N., ... Wilson-Hodge, C. (2011). Fermi/Gamma-ray burst monitor observations of SGR J0501+4516 bursts. Astrophysical Journal, 739(2). https://doi.org/10.1088/0004-637X/739/2/87 [details]
    • Maaskant, K. M., Bik, A., Waters, L. B. F. M., Kaper, L., Henning, T., Puga, E., Horrobin, M., & Kainulainen, J. (2011). Sequential star formation in IRAS 06084-0611 (GGD 12-15): from intermediate-mass to high-mass stars. Astronomy & Astrophysics, 531. https://doi.org/10.1051/0004-6361/201116743 [details]
    • Ochsendorf, B. B., Ellerbroek, L. E., Chini, R., Hartoog, O. E., Hoffmeister, V., Waters, L. B. F. M., & Kaper, L. (2011). First firm spectral classification of an early-B pre-main-sequence star: B275 in M 17. Astronomy & Astrophysics, 536. https://doi.org/10.1051/0004-6361/201118089 [details]
    • Sande, J., Kriek, M., Franx, M., Dokkum, P. G., Bezanson, R., Whitaker, K. E., Brammer, G., Labbé, I., Groot, P. J., & Kaper, L. (2011). The stellar velocity dispersion of a compact massive galaxy at z = 1.80 using X-Shooter: confirmation of the evolution in the mass-size and mass-dispersion relations. Astrophysical Journal Letters, 736. https://doi.org/10.1088/2041-8205/736/1/L9 [details]
    • Sparre, M., Sollerman, J., Fynbo, J. P. U., Malesani, D., Goldoni, P., de Ugarte Postigo, A., Covino, S., D'Elia, V., Flores, H., Hammer, F., Hjorth, J., Jakobsson, P., Kaper, L., Leloudas, G., Levan, A. J., Milvang-Jensen, B., Schulze, S., Tagliaferri, G., Tanvir, N. R., ... Wijers, R. A. M. J. (2011). Spectroscopic evidence for SN 2010ma associated with GRB 101219B. Astrophysical Journal Letters, 735. https://doi.org/10.1088/2041-8205/735/1/L24 [details]
    • Starling, R. L. C., Wiersema, K., Levan, A. J., Sakamoto, T., Bersier, D., Goldoni, P., Oates, S. R., Rowlinson, B. A., Campana, S., Sollerman, J., Tanvir, N. R., Malesani, D., Fynbo, J. P. U., Covino, S., D'Avanzo, P., O'Brien, P. T., Page, K. L., Osborne, J. P., Vergani, S. D., ... Woosley, S. E. (2011). Discovery of the nearby long, soft GRB 100316D with an associated supernova. Monthly Notices of the Royal Astronomical Society, 411(4), 2792-2803. https://doi.org/10.1111/j.1365-2966.2010.17879.x [details]
    • Taylor, W. D., Evans, C. J., Sana, H. A. A., Walborn, N. R., de Mink, S. E., Stroud, V. E., Alvarez-Candal, A., Barbá, R. H., Bestenlehner, J. M., Bonanos, A. Z., Brott, I., Crowther, P. A., de Koter, A., Friedrich, K., Gräfener, G., Hénault-Brunet, V., Herrero, A., Kaper, L., Langer, N., ... Vink, J. S. (2011). The VLT-FLAMES Tarantula Survey: II. R139 revealed as a massive binary system. Astronomy & Astrophysics, 530. https://doi.org/10.1051/0004-6361/201116785 [details]
    • Tramper, F., Sana, H., de Koter, A., & Kaper, L. (2011). On the mass-loss rate of massive stars in the low-metallicity galaxies IC 1613, WLM, and NGC 3109. Astrophysical Journal Letters, 741. https://doi.org/10.1088/2041-8205/741/1/L8 [details]
    • Vergani, S. D., Flores, H., Covino, S., Fugazza, D., Gorosabel, J., Levan, A. J., Puech, M., Salvaterra, R., Tello, J. C., de Ugarte Postigo, A., D'Avanzo, P., D'Elia, V., Fernández, M., Fynbo, J. P. U., Ghirlanda, G., Jelínek, M., Lundgren, A., Malesani, D., Palazzi, E., ... Wijers, R. A. M. J. (2011). GRB 091127/SN 2009nz and the VLT/X-shooter spectroscopy of its host galaxy: probing the faint end of the mass-metallicity relation. Astronomy & Astrophysics, 535. https://doi.org/10.1051/0004-6361/201117726 [details]
    • Vernet, J., Dekker, H., D'Odorico, S., Kaper, L., Kjaergaard, P., Hammer, F., Randich, S., Zerbi, F., Groot, P. J., Hjorth, J., Guinouard, I., Navarro, R., Adolfse, T., Albers, P. W., Amans, J-P., Andersen, J. J., Andersen, M. I., Binetruy, P., Bristow, P., ... Zacchei, A. (2011). X-shooter, the new wide band intermediate resolution spectrograph at the ESO Very Large Telescope. Astronomy & Astrophysics, 536. https://doi.org/10.1051/0004-6361/201117752 [details]
    • Vos, D. A. I., Cox, N. L. J., Kaper, L., Spaans, M., & Ehrenfreund, P. (2011). Diffuse interstellar bands in Upper Scorpius: probing variations in the DIB spectrum due to changing environmental conditions. Astronomy & Astrophysics, 533. https://doi.org/10.1051/0004-6361/200809746 [details]
    • van Weerdenburg, F., Murphy, M. T., Malec, A. L., Kaper, L., & Ubachs, W. (2011). First constraint on cosmological variation of the proton-to-electron mass ratio from two independent telescopes. Physical Review Letters, 106. https://doi.org/10.1103/PhysRevLett.106.180802 [details]

    2010

    • Bik, A., Puga, E., Waters, L. B. F. M., Horrobin, M., Henning, T., Vasyunina, T., Beuther, H., Linz, H., Kaper, L., van den Ancker, M., Lenorzer, A., Churchwell, E., Kurtz, S., Kouwenhoven, M. B. N., Stolte, A., de Koter, A., Thi, W. F., Comerón, F., & Waelkens, C. (2010). Sequential star formation in RCW 34: a spectroscopic census of the stellar content of high-mass star-forming regions. Astrophysical Journal, 713(2), 883-899. https://doi.org/10.1088/0004-637X/713/2/883 [details]
    • D'Elia, V., Fynbo, J. P. U., Covino, S., Goldoni, P., Jakobsson, P., Matteucci, F., Piranomonte, S., Sollerman, J., Thöne, C. C., Vergani, S. D., Vreeswijk, P. M., Watson, D. J., Wiersema, K., Zafar, T., de Ugarte Postigo, A., Flores, H., Hjorth, J., Kaper, L., Levan, A. J., ... Tanvir, N. R. (2010). VLT/X-shooter spectroscopy of the GRB 090926A afterglow. Astronomy & Astrophysics, 523, A36. https://doi.org/10.1051/0004-6361/201015216 [details]
    • Fynbo, J. P. U., Laursen, P., Ledoux, C., Møller, P., Durgapal, A. K., Goldoni, P., Gullberg, B., Kaper, L., Maund, J., Noterdaeme, P., Östlin, G., Strandet, M. L., Toft, S., Vreeswijk, P. M., & Zafar, T. (2010). Galaxy counterparts of metal-rich damped Lyα absorbers - I. The case of the z= 2.35 DLA towards Q 2222−0946. Monthly Notices of the Royal Astronomical Society, 408(4), 2128-2136. https://doi.org/10.1111/j.1365-2966.2010.17294.x [details]
    • Hammer, F., Kaper, L., & Dalton, G. (2010). OPTIMOS-EVE: a fibre-fed optical-near-infrared multi-object spectrograph for the E-ELT. The Messenger, (140), 36-37. http://www.eso.org/sci/publications/messenger/archive/no.140-jun10/messenger-no140-36-37.pdf [details]
    • Malec, A. L., Buning, R., Murphy, M. T., Milutinovic, N., Ellison, S. L., Prochaska, J. X., Kaper, L., Tumlinson, J., Carswell, R. F., & Ubachs, W. (2010). Keck telescope constraint on cosmological variation of the proton-to-electron mass ratio. Monthly Notices of the Royal Astronomical Society, 403(3), 1541-1555. https://doi.org/10.1111/j.1365-2966.2009.16227.x [details]
    • de Ugarte Postigo, A., Goldoni, P., Thöne, C. C., Vergani, S. D., D'Elia, V., Piranomonte, S., Malesani, D., Covino, S., Flores, H., Fynbo, J. P. U., Hjorth, J., Wijers, R. A. M. J., D'Odorico, S., Hammer, F., Kaper, L., Kjærgaard, P., Randich, S., Andersen, M. I., Antonelli, L. A., ... Vernet, J. (2010). GRB 090313: X-shooter's first shot at a gamma-ray burst. Astronomy & Astrophysics, 513, A42. https://doi.org/10.1051/0004-6361/200913113 [details]

    2009

    • Caballero-Nieves, S. M., Gies, D. R., Bolton, C. T., Hadrava, P., Herrero, A., Hillwig, T. C., Howell, S. B., Huang, W., Kaper, L., Koubský, P., & McSwain, M. V. (2009). The ultraviolet spectrum and physical properties of the mass donor star in HD 226868 = Cygnus X-1. Astrophysical Journal, 701(2), 1895-1905. https://doi.org/10.1088/0004-637X/701/2/1895 [details]
    • Kaper, L., D'Odorico, S., Hammer, F., Pallavicini, R., Kjaergaard Rasmussen, P., Dekker, H., Francois, P., Goldoni, P., Guinouard, I., Groot, P. J., Hjorth, J., Horrobin, M., Navarro, R., Royer, F., Santin, P., Vernet, J., & Zerbi, F. (2009). X-shooter: A medium-resolution, wide-band spectrograph for the VLT. In A. Moorwood (Ed.), Science with the VLT in the ELT Era (pp. 319-324). (Astrophysics and Space Science Proceedings). Springer. https://doi.org/10.1007/978-1-4020-9190-2_53 [details]
    • Kouwenhoven, M. B. N., Brown, A. G. A., Goodwin, S. P., Portegies Zwart, S. F., & Kaper, L. (2009). Exploring the consequences of pairing algorithms for binary stars. Astronomy & Astrophysics, 493(3), 979-1016. https://doi.org/10.1051/0004-6361:200810234 [details]

    2008

    • Bik, A., Kaper, L., Hanson, M. M., & Waters, L. B. F. M. (2008). K-band spectroscopy of deeply embedded, young OB stars. In A. de Koter, L. J. Smith, & L. B. F. M. Waters (Eds.), Mass Loss from Stars and the Evolution of Stellar Clusters: proceedings of a workshop held at Lunteren, the Netherlands, 29 May-1 June 2006 (pp. 143-144). (Astronomical Society of the Pacific conference series; Vol. 388). Astronomical Society of the Pacific. http://aspbooks.org/custom/publications/paper/388-0143.html [details]
    • Bik, A., Lenorzer, A., Thi, W. F., Puga Antolín, E., Waters, L. B. F. M., Kaper, L., & Martín-Hernández, N. L. (2008). An infrared view of (candidate accretion) disks around massive young stars. In H. Beuther, H. Linz, & T. Henning (Eds.), Massive Star Formation: Observations Confront Theory: proceedings of a conference held at the Heidelberg Convention Center, Heidelberg, Germany, 10-14 September 2007 (pp. 78-85). (Astronomical Society of the Pacific conference series; Vol. 387). Astronomical Society of the Pacific. http://aspbooks.org/custom/publications/paper/387-0078.html [details]
    • Gies, D. R., Bolton, C. T., Blake, R. M., Caballero-Nieves, S. M., Crenshaw, D. M., Hadrava, P., Herrero, A., Hillwig, T. C., Howell, S. B., Huang, W., Kaper, L., Koubský, P., & McSwain, M. V. (2008). Stellar wind variations during the X-ray high and low states of Cygnus X-1. Astrophysical Journal, 678(2), 1237-1247. https://doi.org/10.1086/586690 [details]
    • Henrichs, H. F., Schnerr, R. S., de Jong, J. A., Kaper, L., Donati, J. F., & Catala, C. (2008). Search for the magnetic field of the O7.5 III star ξ Persei. Proceedings of the International Astronomical Union, 4(S259), 383-384. https://doi.org/10.1017/S1743921309030774 [details]
    • Kouwenhoven, M. B. N., Brown, A. G. A., Goodwin, S. P., Portegies Zwart, S. F., & Kaper, L. (2008). Pairing mechanisms for binary stars. Astronomische Nachrichten, 329(9-10), 984-987. https://doi.org/10.1002/asna.200811061 [details]
    • Navarro, R., Elswijk, E., Tromp, N., ter Horst, R., Horrobin, M., Vernet, J., Finger, G., Groot, P., & Kaper, L. (2008). X-shooter near-IR spectrograph arm realisation. In I. S. McLean, & M. M. Casali (Eds.), Ground-based and Airborne Instrumentation for Astronomy II: 23-28 June 2008, Marseille, France (Vol. 2). Article 70141Y (Proceedings of SPIE, the International Society for Optical Engineering; Vol. 7014). SPIE. https://doi.org/10.1117/12.789778 [details]
    • Puga, E., Bik, A., Waters, L. B. F. M., Henning, T., Kaper, L., van den Ancker, M., Lenorzer, A., Churchwell, E., Kurtz, S., Rodón, J. A., Vasyunina, T., Kouwenhoven, M. B. N., Beuther, H., Linz, H., Horrobin, M., Stolte, A., de Koter, A., Thi, W. F., Martín-Hernández, N. L., ... Feldt, M. (2008). Probing the early evolution of young high-mass stars. In H. Beuther, H. Linz, & T. Henning (Eds.), Massive Star Formation: Observations Confront Theory: proceedings of a conference held at the Heidelberg Convention Center, Heidelberg, Germany, 10-14 September 2007 (pp. 331-337). (Astronomical Society of the Pacific conference series; Vol. 387). Astronomical Society of the Pacific. http://aspbooks.org/custom/publications/paper/387-0331.html [details]
    • Vernet, J., Kerber, F., Saitta, F., Mainieri, V., D'Odorico, S., Lidman, C., Mason, E., Bohlin, R. C., Rauch, T., Ivanov, V. D., Smette, A., Walsh, J. R., Fosbury, R. A. E., Goldoni, P., Groot, P., Hammer, F., Horrobin, M., Kaper, L., Kjaergaard-Rasmussen, P., ... Royer, F. (2008). Building up a database of spectro-photometric standard stars from the UV to the near-IR: A status report. In R. J. Brissenden, & D. R. Silva (Eds.), Observatory Operations: Strategies, Processes, and Systems II: 24-26 May, 2008, Marseille, France Article 70161G (Proceedings of SPIE; Vol. 7016). SPIE. https://doi.org/10.1117/12.788676 [details]
    • Williams, S. J., Gies, D. R., Henry, T. J., Orosz, J. A., McSwain, M. V., Hillwig, T. C., Penny, L. R., Sonneborn, G., Iping, R., van der Hucht, K. A., & Kaper, L. (2008). Dynamical masses for the Large Magellanic Cloud massive binary system [L72] LH 54-425. Astrophysical Journal, 682(1), 492-498. https://doi.org/10.1086/589687 [details]

    2022

    • Shepard, K., Douglas, G., Kaper, L., & de Koter, A. (2022). Spectroscopic Line Modeling of the Fastest Rotating O-type Stars. Bulletin - American Astronomical Society, 54(6), [e-id 2022n6i111p02].

    2021

    • Ramírez-Tannus, M. C., Backs, F., de Koter, A., Sana, H., Beuther, H., Bik, A., Brandner, W., Kaper, L., Linz, H., Henning, T., & Poorta, J. (2021). A relation between the radial velocity dispersion of young clusters and their age: Evidence for hardening as the formation scenario of massive close binaries. Astronomy & Astrophysics, 645, Article L10. https://doi.org/10.1051/0004-6361/202039673 [details]
    • Shepard, K., Gies, D., Lester, K., Wang, L., Guo, Z., Kaper, L., De Koter, A., & Sana, H. (2021). The Whirling Dervishes: Spectral Analysis of VFTS 102 and 285. Bulletin - American Astronomical Society, 53(1), Article 116.03. https://baas.aas.org/pub/2021n1i116p03/release/1 [details]

    2018

    • Jagourel, P., Fitzsimons, E., Hammer, F., De Frondat Laadim, F., Puech, M., Evans, C. J., Sanchez, R., Guinouard, I., Chemla, F., Frotin, M., Yang, Y., Parr-Burman, P., Morris, T., Dubbeldam, M., Close, M., Middleton, K., Rousset, G., Gendron, E., Kelz, A., ... Le Fèvre, O. (2018). MOSAIC: the ELT multi-object spectrograph. In C. J. Evans, L. Simard, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy VII: 10-14 June 2018, Austin, Texas, United States (Vol. 5). Article 10702A4 (Proceedings of the SPIE; Vol. 10702). SPIE. https://doi.org/10.1117/12.2314135 [details]
    • Janssen, A. W., Sokolova, E., Pragt, J., Kragt, J., Navarro, R., Tromp, N., Fitzsimons, E., Rodrigues, M., Larrieu, M., Kelz, A., Morris, T., Jagourel, P., Chemla, F., Kaper, L., & Dalton, G. (2018). Trade-offs in the visible spectrograph of the ELT instrument MOSAIC. In C. J. Evans, L. Simard, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy VII: 10-14 June 2018, Austin, Texas, United States (Vol. 5). Article 107029F (Proceedings of the SPIE; Vol. 10702). SPIE. https://doi.org/10.1117/12.2313302 [details]
    • Morris, S., Hammer, F., Jagourel, P., Evans, C. J., Puech, M., Dalton, G. B., Rodrigues, M., Sanchez-Janssen, R., Fitzsimons, E., Barbuy, B., Cuby, J-G., Kaper, L., Roth, M., Rousset, G., Myers, R., Le Fèvre, O., Finogenov, A., Kotilainen, J., Castilho, B., ... Berkourn, N. (2018). The ELT-MOS (MOSAIC): towards the construction phase. In C. J. Evans, L. Simard, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy VII: 10-14 June 2018, Austin, Texas, United States (Vol. 1). Article 107021W (Proceedings of the SPIE; Vol. 10702). SPIE. https://doi.org/10.1117/12.2311430 [details]
    • Puech, M., Evans, C. J., Disseau, K., Japelj, J., Ramírez-Agudelo, O. H., Rahmani, H., Trevisan, M., Wang, J. L., Rodrigues, M., Sánchez-Janssen, R., Yang, Y., Hammer, F., Kaper, L., Morris, S. L., Barbuy, B., Cuby, J-G., Dalton, G., Fitzsimons, E., Jagourel, P., & MOSAIC Science Team (2018). Simulating surveys for ELT-MOSAIC: status of the MOSAIC science case after phase A. In C. J. Evans, L. Simard, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy VII: 10-14 June 2018, Austin, Texas, United States (Vol. 5). Article 107028R (Proceedings of the SPIE; Vol. 10702). SPIE. https://doi.org/10.1117/12.2311292 [details]

    2017

    • Covino, S., Wiersema, K., Fan, Y. Z., Toma, K., Higgins, A. B., Melandri, A., D'Avanzo, P., Mundell, C. G., Palazzi, E., Tanvir, N. R., Bernardini, M. G., Branchesi, M., Brocato, E., Campana, S., Alighieri, S. D. S., Götz, D., Fynbo, J. P. U., Gao, W., Gomboc, A., ... Wijers, R. A. M. J. (2017). Author Correction: The unpolarized macronova associated with the gravitational wave event GW 170817. Nature Astronomy, 1, 805. https://doi.org/10.1038/s41550-017-0319-6
    • Kaper, L., Fynbo, J. P. U., Pugliese, V., & van Rest, D. (2017). The VLT/X-shooter GRB afterglow legacy survey. Proceedings of the International Astronomical Union, 12(S329), 410. https://doi.org/10.1017/S1743921317003428 [details]
    • Ramírez-Tannus, M. C., Kaper, L., de Koter, A., Tramper, F., Sana, H., Ramírez-Agudelo, O. H., Bik, A., Ellerbroek, L. E., & Ochsendorf, B. B. (2017). Massive pre-main-sequence stars in M17. Proceedings of the International Astronomical Union, 12(S329), 439. https://doi.org/10.1017/S1743921317002897 [details]

    2016

    • Evans, C. J., Puech, M., Rodrigues, M., Barbuy, B., Cuby, J-G., Dalton, G., Fitzsimons, E., Hammer, F., Jagourel, P., Kaper, L., Morris, S. L., Morris, T. J., & MOSAIC Science Team (2016). Science requirements and trade-offs for the MOSAIC instrument for the European ELT. In C. J. Evans, L. Simard, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy VI: 26-30 June 2016, Edinburgh, United Kingdom (Vol. 5). Article 99089J (Proceedings of the SPIE; Vol. 9908). SPIE. https://doi.org/10.1117/12.2231675 [details]
    • Hammer, F., Morris, S., Kaper, L., Barbuy, B., Cuby, J. G., Roth, M., Jagourel, P., Evans, C. J., Puech, M., Fitzsimons, E., Dalton, G., Rodrigues, M., & MOSAIC team (2016). The E-ELT multi-object spectrograph: latest news from MOSAIC. In C. J. Evans, L. Simard, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy VI: 26-30 June 2016, Edinburgh, United Kingdom (Vol. 2). Article 990824 (Proceedings of the SPIE; Vol. 9908). SPIE. https://doi.org/10.1117/12.2232427 [details]
    • Piranomonte, S., Vergani, S. D., Malesani, D., Fynbo, J. P. U., Wiersema, K., & Kaper, L. (2016). GRB110715A: VLT redshift. GRB Coordinates Network, Circular Service, 1216. https://gcn.gsfc.nasa.gov/gcn/gcn3/12164.gcn3 [details]

    2015

    • Martins, F., Bergemann, M., Bestenlehner, J. M., Crowther, P. A., Hamann, W. R., Najarro, F., Nieva, M. F., Przybilla, N., Freimanis, J., Hou, W., & Kaper, L. (2015). SpS5 - II. Stellar and wind parameters. Proceedings of the International Astronomical Union, 10(H16), 420-428. https://doi.org/10.1017/S1743921314011788 [details]
    • Vink, J. S., Heger, A., Krumholz, M. R., Puls, J., Banerjee, S., Castro, N., Chen, K. J., Chenè, A. N., Crowther, P. A., Daminelli, A., Gräfener, G., Groh, J. H., Hamann, W. R., Heap, S., Herrero, A., Kaper, L., Najarro, F., Oskinova, L. M., Roman-Lopes, A., ... Zhang, Y. (2015). Very Massive Stars in the local Universe. Proceedings of the International Astronomical Union, 10(H16), 51-79. https://doi.org/10.1017/S1743921314004657 [details]

    2014

    • Cox, N. L. J., Cami, J., Kaper, L., Foing, B. H., Ehrenfreund, P., Ochsendorf, B. B., van Hooff, S. H. M., & Salama, F. (2014). X-Shooter Survey of Near-Infrared DIBs. Proceedings of the International Astronomical Union, 9(S297), 103-105. https://doi.org/10.1017/S1743921313015664 [details]
    • Hartoog, O. E., Malesani, D., Sanchez-Ramirez, R., de Ugarte Postigo, A., Levan, A. J., Fynbo, J. P. U., Vreeswijk, P. M., & Kaper, L. (2014). GRB 140622A: VLT/X-shooter redshift. GRB Coordinates Network, Circular Service, 16437(1). http://gcn.gsfc.nasa.gov/gcn/gcn3/16437.gcn31 [details]
    • Kaper, L. (2014). The Promise of Recent and Future Observatories and Instruments. Proceedings of the International Astronomical Union, 9(S297), 389-398. https://doi.org/10.1017/S1743921313016190 [details]
    • Wehres, N., Ochsendorf, B., Bally, J., Snow, T., Bierbaum, V., Cox, N. L. J., Kaper, L., & Tielens, A. G. G. M. (2014). Search for DIBs in Emission: MWC 922 - The Red Square Nebula. Proceedings of the International Astronomical Union, 9(S297), 226-228. https://doi.org/10.1017/S1743921313015913 [details]

    2013

    • Flores, H., Covino, S., Xu, D., Kruehler, T., Fynbo, J., Milvang-Jensen, B., de Ugarte Postigo, A., Kaper, L., & Wiersema, K. (2013). GRB 130427A: VLT/X-shooter redshift confirmation. GRB Coordinates Network, Circular Service, 14491(1). http://gcn.gsfc.nasa.gov/gcn/gcn3/14491.gcn3 [details]
    • Hartoog, O. E., Xu, D., Malesani, D., Tanvir, N. R., Fynbo, J. P. U., Kaper, L., & D'Elia, V. (2013). GRB 131117A: VLT/X-shooter redshift. GRB Coordinates Network, Circular Service, 15494. http://gcn.gsfc.nasa.gov/gcn/gcn3/15494.gcn3 [details]
    • Klaassen, P. D., Mottram, J. C., Longmore, S. N., Fuller, G. A., van der Tak, F. F. S., & Kaper, L. (2013). High-mass star formation. Astronomy & Geophysics, 54(3), 3.33. https://doi.org/10.1093/astrogeo/att083 [details]
    • Xu, D., Malesani, D., Kruehler, T., Fynbo, J. P. U., Perley, D. A., Goldoni, P., Kaper, L., de Ugarte Postigo, A., & Tanvir, N. R. (2013). GRB 111123A: Keck-I host detection and VLT/X-shooter redshift. GRB Coordinates Network, Circular Service, 14273(1). http://gcn.gsfc.nasa.gov/gcn/gcn3/14273.gcn3 [details]
    • Xu, D., Malesani, D., Schulze, S., Fynbo, J. P. U., D'Elia, V., Goldoni, P., Hartoog, O., Hjorth, J., Kaper, L., Kruehler, T., Levan, A. J., Milvang-Jensen, B., Tanvir, N. R., & Wiersema, K. (2013). GRB 130606A: VLT/X-shooter redshift confirmation. GRB Coordinates Network, Circular Service, 14816(1). http://gcn.gsfc.nasa.gov/gcn/gcn3/14816.gcn3 [details]
    • Xu, D., de Ugarte Postigo, A., Malesani, D., Vreeswijk, P., D'Elia, V., Fynbo, J. P. U., Milvang-Jensen, B., Flores, H., Hartoog, O., Goldoni, P., Kaper, L., & Vergani, S. D. (2013). GRB 130701A: VLT/X-shooter redshift. GRB Coordinates Network, Circular Service, 14956(1). http://gcn.gsfc.nasa.gov/gcn/gcn3/14956.gcn3 [details]

    2012

    • D'Avanzo, P., Milvang-Jensen, B., Vreeswijk, P., Tanvir, N., Malesani, D., Goldoni, P., Kaper, L., Covino, S., & Fynbo, J. (2012). GRB 120311A: VLT/X-shooter observations. GRB Coordinates Network, Circular Service, 13051, 1. http://adsabs.harvard.edu/abs/2012GCN..13051...1D [details]
    • Ellerbroek, L. E., Kaper, L., Bik, A., Maaskant, K. M., & Podio, L. (2012). The Star Formation History of RCW 36. In A. C. Carciofi, & T. Rivinius (Eds.), Circumstellar Dynamics at High Resolution: proceedings of a joint ESO/Brazilian workshop held at Foz do Iguaçu, Brazil, 27 February-2 March 2012 (pp. 351-360). (Astronomical Society of the Pacific conference series; Vol. 464). Astronomical Society of the Pacific. http://www.aspbooks.org/a/volumes/article_details/?paper_id=34918 [details]
    • Kruehler, T., Tanvir, N. R., de Ugarte Postigo, A., Malesani, D., Fynbo, J., Melandri, A., Levan, A. J., Wiersema, K., Schulze, S., Goldoni, P., Flores, H., & Kaper, L. (2012). GRB 121027A: x-shooter redshift confirmation. GRB Coordinates Network, Circular Service, 13930, 1. http://gcn.gsfc.nasa.gov/gcn/gcn3/13930.gcn3 [details]
    • Sana, H., de Koter, A., Garcia, M., Hartoog, O., Kaper, L., Tramper, F., Herrero, A., & Castro, N. (2012). X-shooter Spectroscopy of Massive Stars in the Local Group and Beyond. The Messenger, 148, 33-37. http://www.eso.org/sci/publications/messenger/archive/no.148-jun12/messenger-no148-33-37.pdf [details]
    • Sanchez-Ramirez, R., de Ugarte Postigo, A., Kruehler, T., Milvang-Jensen, B., Fynbo, J. P. U., Tanvir, N., Malesani, D., Schulze, S., Kaper, L., & Flores, H. (2012). GRB 121201A: x-shooter redshift. GRB Coordinates Network, Circular Service, 14035, 1. http://adsabs.harvard.edu/abs/2012GCN..14035...1S [details]
    • Snik, F., van Harten, G., Navarro, R., Groot, P., Kaper, L., & de Wijn, A. (2012). Design of a full-Stokes polarimeter for VLT/X-shooter. In I. S. McLean, S. K. Ramsay, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy IV: 1-6 July 2012, Amsterdam, Netherlands (Vol. 2). Article 844625 (Proceedings of SPIE; Vol. 8446). SPIE. https://doi.org/10.1117/12.926163 [details]

    2011

    2010

    • Chemla, F., Dalton, G., Guinouard, I., Pragt, J., Sawyer, E., Spanò, P., Tosh, I. A., Andersen, M. I., Navarro, R., Hammer, F., & Kaper, L. (2010). OPTIMOS-EVE design trade-off analysis. In I. S. McLean, S. K. Ramsay, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy III: 27 June-2 July 2010, San Diego, California, United States Article 77355L (Proceedings of SPIE; Vol. 7735). SPIE. https://doi.org/10.1117/12.857519 [details]
    • Groot, P., Kaper, L., Ellerbroek, L., Malesani, D., Jakobsson, P., Fynbo, J. P. U., Hjorth, J., Watson, D. J., & Mason, E. (2010). GRB 100219A: VLT/X-shooter redshift. GRB Coordinates Network, Circular Service, 10441. http://gcn.gsfc.nasa.gov/gcn/gcn3/10441.gcn3 [details]
    • Iping, R., Kaper, L., & Sonneborn, G. (2010). Wavelength-Dependent Structure in the Vela X-1 Bow Shock. Bulletin - American Astronomical Society, 215, 365.
    • Milvang-Jensen, B., Goldoni, P., Tanvir, N. R., Wiersema, K., Malesani, D., de Ugarte Postigo, A., D'Elia, V., Vergani, S. D., Fynbo, J. P. U., Kaper, L., Sollerman, J., Updike, A., Greiner, J., & Kruehler, T. (2010). GRB 100621A: VLT/X-shooter redshift. GRB Coordinates Network, Circular Service, 10876. http://gcn.gsfc.nasa.gov/gcn/gcn3/10876.gcn3 [details]
    • Navarro, R., Chemla, F., Bonifacio, P., Flores, H., Guinouard, I., Huet, J-M., Puech, M., Royer, F., Pragt, J. H., Wulterkens, G., Sawyer, E. C., Caldwell, M. E., Tosh, I. A. J., Whalley, M. S., Woodhouse, G. F. W., Spanò, P., Di Marcantonio, P., Andersen, M. I., Dalton, G. B., ... Hammer, F. (2010). Project overview of OPTIMOS-EVE: the fibre-fed multi-object spectrograph for the E-ELT. In I. S. McLean, S. K. Ramsay, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy III: 27 June-2 July 2010, San Diego, California, United States Article 77352L (Proceedings of SPIE, the International Society for Optical Engineering; Vol. 7735). SPIE. https://doi.org/10.1117/12.857638 [details]
    • Vernet, J., Dekker, H., D'Odorico, S., Mason, E., Di Marcantonio, P., Downing, M., Elswijk, E., Finger, G., Fischer, G., Kerber, F., Kern, L., Lizon, J-L., Lucuix, C., Mainieri, V., Modigliani, A., Patat, F., Ramsay, S., Santin, P., Vidali, M., ... Zerbi, F. (2010). Performances of X-shooter, the new wide-band intermediate resolution spectrograph at the VLT. In I. S. McLean, S. K. Ramsay, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy III: 27 June-2 July 2010, San Diego, California, United States Article 77351I (Proceedings of SPIE, the International Society for Optical Engineering; Vol. 7735). SPIE. https://doi.org/10.1117/12.857124 [details]

    2009

    • de Ugarte Postigo, A., D'Odorico, S., Vernet, J., Modigliani, A., Ramsay, S., Covino, S., Flores, H., Fynbo, J., Hjorth, J., Wijers, R. A. M. J., Hammer, F., Kaper, L., Kjaergaard, P., Randich, S., & Groot, P. J. (2009). X-shooter observations of GRB 090313. GRB Coordinates Network, Circular Service, 9015. http://gcn.gsfc.nasa.gov/gcn/gcn3/9015.gcn3 [details]

    2019

    2018

    • Cami, J., Cox, N. L. J., Farhang, A., Smoker, J., Elyajouri, M., Lallement, R., Bacalla, X., Bhatt, N. H., Bron, E., Cordiner, M. A., de Koter, A., Ehrenfreund, P., Evans, C., Foing, B. H., Javadi, A., Joblin, C., Kaper, L., Khosroshahi, H. G., Laverick, M., ... Wade, G. (2018). The ESO Diffuse Interstellar Band Large Exploration Survey (EDIBLES). The Messenger, 171, 31-36. https://doi.org/10.18727/0722-6691/5066 [details]
    • D'Avanzo, P., Bolmer, J., D'Elia, V., Fynbo, J. P. U., Heintz, K. E., Izzo, L., Japelj, J., Kann, D. A., Malesani, D., Selsing, J., Tanvir, N. R., Zafar, T., Campana, S., de Ugarte Postigo, A., Hjorth, J., Kaper, L., Melandri, A., & Smette, A. (2018). GRB 180325A: VLT/X-shooter spectroscopic observations. GRB Coordinates Network, Circular Service, 2555. https://gcn.gsfc.nasa.gov/gcn/gcn3/22555.gcn3 [details]

    2021

    • Hammer, F., Morris, S., Cuby, J-G., Kaper, L., Steinmetz, M., Afonso, J., Barbuy, B., Bergin, E., Finogenov, A., Gallego, J., Kassin, S., Miller, C., Östlin, G., Pentericci, L., Schaerer, D., Ziegler, B., Chemla, F., Dalton, G., De Frondat, F., ... Seifert, W. (2021). MOSAIC on the ELT: High-multiplex Spectroscopy to Unravel the Physics of Stars and Galaxies from the Dark Ages to the Present Day. The Messenger, 182, 33-37. https://doi.org/10.18727/0722-6691/5220

    Prize / grant

    Membership / relevant position

    Media appearance

    Talk / presentation

    • Kaper, L. (speaker) (30-3-2016). Quantitative spectroscopy of OB-type stars, SWEDIBLES, Leiden.

    Others

    • Hessels, J. W. T. (chair), Rowlinson, B. A. (organiser), Kaper, L. (organiser) & de Koter, A. (organiser) (2016). Nederlandse Astronomen Conferentie 2016, Nunspeet. Scientific Organising Committee (organising a conference, workshop, ...).

    2022

    • Stoop, M., Kaper, L., de Koter, A., Guo, D., Lamers, H. & Rieder, S. (2022). Reproduction Package for the paper "The early evolution of young massive clusters. The kinematic history of NGC6611 / M16". Zenodo. https://doi.org/10.5281/zenodo.6372280
    • Brands, S. A., De Koter, A., Bestenlehner, J. M., Crowther, P. A., Sundqvist, J. O., Puls, J., Caballero-Nieves, S. M., Abdul-Masih, M., Driessen, F. A., García, M., Geen, S., Gräfener, G., Hawcroft, C., Kaper, L., Keszthelyi, Z., Langer, N., Sana, H., Schneider, F. R. N., Shenar, T. & Vink, J. S. (2022). The R136 star cluster dissected with Hubble Space Telescope/STIS. III. The most massive stars and their clumped winds. Zenodo. https://doi.org/10.5281/zenodo.6353513

    2020

    • Ramírez-Tannus, M. C., Ramírez-Agudelo, O. H., Poorta, J., Bik, A., Kaper, L., de Koter, A., De Ridder, J., Beuther, H., Brandner, W., Davies, B., Gennaro, M., Guo, D., Henning, T., Linz, H., Naylor, T., Pasquali, A. & Sana, H. (2020). M8, G333.6-0.2 and NGC6357 young stars : J/A+A/633/A155. Centre de Donnees Strasbourg (CDS). https://doi.org/10.26093/cds/vizier.36330155
    • van Gelder, M. L., Kaper, L., Japelj, J., Ellerbroek, L. E., Bestenlehner, J. M., Bik, A., de Koter, A., de Mink, S., Sabbi, E., Sana, H., Vink, J. S., Walborn, N. R., Ramírez-Tannus, M. C., Barbá, R. H., Gräfener, G. & Sewiło, M. (2020). Massive young stellar objects in 30 Doradus : J/A+A/636/A54. Centre de Donnees Strasbourg (CDS). https://doi.org/10.26093/cds/vizier.36360054

    2019

    • Zafar, T., Heintz, K. E., Malesani, D., Bolmer, J., Ledoux, C., Arabsalmani, M., Kaper, L., Campana, S., Selsing, J., Kann, D. A., Schweyer, T., Christensen, L., Møller, P., Japelj, J., Perley, D., Tanvir, N. R., D'Avanzo, P., Hartmann, D. H., Hjorth, J., … Postigo, A. . (2019). GROND, NOT & VLT/X-shooter obs. of GRB180325A : J/ApJ/860/L21. Centre de Donnees Strasbourg (CDS). https://doi.org/10.26093/cds/vizier.18609021
    • Heintz, K. E., Bolmer, J., Ledoux, C., Noterdaeme, P., Krogager, J.-K., Jakobsson, P., Covino, S., D'Elia, V., Hartmann, D. H., Izzo, L., Japelj, J., Kann, D. A., Kaper, L., Petitjean, P., Rossi, A., Salvaterra, R., Schady, P., Selsing, J., Starling, R., … de Ugarte Postigo, U. A. (2019). Reduced X-shooter spectra of GRB 190114A : J/A+A/629/A131. Centre de Donnees Strasbourg (CDS). https://doi.org/10.26093/cds/vizier.36290131

    2013

    2010

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