Thone, C CWiersema, KLedoux, CStarling, R L Cde Ugarte Postigo, ALevan, A. J.Fynbo, J. P. UCurran, P AGorosabel, J.Vreeswijk, P MKewley, Lisa2015-12-130004-6361http://hdl.handle.net/1885/82313Context. GRB afterglow spectra are sensitive probes of interstellar matter along the line-of-sight in their host galaxies, as well as in intervening galaxies. The rapid fading of GRBs makes it very difficult to obtain spectra of sufficient resolution andKeywords: Absorption; Astrophysics; Curve fitting; Galaxies; Gamma rays; Metals; Stars; Absorption lines; Column densities; Cosmology: observations; Deep imaging; Galaxies: abundances; Gamma rays: bursts; Gamma-ray burst; Host galaxies; HST imaging; Interstellar ma Cosmology: observations; Galaxies: abundances; Gamma rays: bursts200810.1051/0004-6361:200785492015-12-11