{"paper":{"title":"GRB hosts through cosmic time - VLT/X-Shooter emission-line spectroscopy of 96 GRB-selected galaxies at 0.1 < z < 3.6","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. de Ugarte Postigo, A. Gomboc, A. J. Levan, A. Nicuesa Guelbenzu, A. Rossi, B. Milvang-Jensen, D. A. Kann, D. A. Perley, D. J. Watson, D. Malesani, D. Xu, E. Palazzi, E. Pian, F. Hammer, G. Leloudas, G. Tagliaferri, J. Bolmer, J. F. Graham, J. Greiner, J. Hjorth, J. Japelj, J. P. U. Fynbo, J. Selsing, K. Wiersema, L. Kaper, M. Friis, N. R. Tanvir, O. E. Hartoog, P. Goldoni, P. Jakobsson, P. M. J. Afonso, P. M. Vreeswijk, P. Schady, R. Filgas, R. Sanchez-Ramirez, S. Covino, S. D. Vergani, S. Klose, S. Piranomonte, S. Savaglio, S. Schulze, T. Kr\\\"uhler, V. D'Elia, Z. Cano","submitted_at":"2015-05-25T20:01:31Z","abstract_excerpt":"[Abridged] We present data and initial results from VLT/X-Shooter emission-line spectroscopy of 96 GRB-selected galaxies at 0.1<z<3.6, the largest sample of GRB host spectroscopy available to date. Most of our GRBs were detected by Swift and 76% are at 0.5<z<2.5 with a median z~1.6. Based on Balmer and/or forbidden lines of oxygen, nitrogen, and neon, we measure systemic redshifts, star formation rates (SFRs), visual attenuations, oxygen abundances (12+log(O/H)), and emission-line widths. We find a strong change of the typical physical properties of GRB hosts with redshift. The median SFR, for"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.06743","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}