GRB hosts through cosmic time

T. Krühler (1, 2) , D. Malesani (2) , J. P. U. Fynbo (2) , O. E. Hartoog , J. Hjorth , P. Jakobsson , D. A. Perley , A. Rossi , P. Schady , S. Schulze , N. R. Tanvir , S. D. Vergani (3, 4) , K. Wiersema , P. M. J. Afonso , J. Bolmer , Z. Cano , S. Covino , V. D’elia , A. de Ugarte Postigo , R. Filgas , M. Friis , J. F. Graham , J. Greiner , P. Goldoni (5) , A. Gomboc , F. Hammer (4) , J. Japelj , D. A. Kann , L. Kaper , S. Klose , A. J. Levan , G. Leloudas , B. Milvang-Jensen , A. Nicuesa Guelbenzu , E. Palazzi , E. Pian , S. Piranomonte , R. Sánchez-Ramírez , S. Savaglio , J. Selsing , G. Tagliaferri , P. M. Vreeswijk , D. J. Watson , D. Xu

1 ESO - European Southern Observatory
2 DARK - Dark Cosmology Centre
3 OAB - INAF - Osservatorio Astronomico di Brera
4 GEPI - Galaxies, Etoiles, Physique, Instrumentation
5 APC (UMR_7164) - AstroParticule et Cosmologie

We present data and initial results from VLT/X-Shooter emission-line spectroscopy of 96 galaxies selected by long γ-ray bursts (GRBs) at 0.1 2 by ~0.4 dex. These properties of GRB hosts and their evolution with redshift can be understood in a cosmological context of star-forming galaxies and a picture in which the hosts’ properties at low redshift are influenced by the tendency of GRBs to avoid the most metal-rich environments.

Mots clés: galaxies: high-redshift; galaxies: star formation; gamma-ray burst: general; galaxies: evolution

Domaines: Astrophysique [astro-ph]

T. Krühler, D. Malesani, J. P. U. Fynbo, O. E. Hartoog, J. Hjorth, et al.. GRB hosts through cosmic time: VLT/X-Shooter emission-line spectroscopy of 96 γ-ray-burst-selected galaxies at 0.1 Astronomy and Astrophysics - A&A, 2015, 581, pp.A125. ⟨10.1051/0004-6361/201425561⟩. ⟨cea-01383676⟩