{"paper":{"title":"The warm, the excited, and the molecular gas: GRB 121024A shining through its star-forming galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. De Cia, A. de Ugarte Postigo, A. Lacluyze, A. P. Drachmann, A. Trotter, B. Milvang-Jensen, C. C. Th\\\"one, C. Ledoux, D. J. Watson, D. Malesani, D. Reichart, F. Knust, J. Elliott, J. Gorosabel, J. Greiner, J. Haislip, J. P. U. Fynbo, K. Varela, K. Wiersema, L. Kaper, M. Friis, M. Maturi, P. Goldoni, P. Jakobsson, P. M. Vreeswijk, R. L. C. Starling, S. D. Vergani, S. Schulze, T. Kr\\\"uhler, V. D'Elia, V. Sudilovsky","submitted_at":"2014-09-22T20:00:15Z","abstract_excerpt":"We present the first reported case of the simultaneous metallicity determination of a gamma-ray burst (GRB) host galaxy, from both afterglow absorption lines as well as strong emission-line diagnostics. Using spectroscopic and imaging observations of the afterglow and host of the long-duration Swift GRB121024A at z = 2.30, we give one of the most complete views of a GRB host/environment to date. We observe a strong damped Ly-alpha absorber (DLA) with a hydrogen column density of log N(HI) = 21.88 +/- 0.10, H2 absorption in the Lyman-Werner bands (molecular fraction of log(f)~ -1.4; fourth soli"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.6315","kind":"arxiv","version":2},"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"}