{"paper":{"title":"The host galaxy of the short GRB111117A at $z = 2.211$: impact on the short GRB redshift distribution and progenitor channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. de Ugarte Postigo, A. Gomboc, A. J. Levan, B. Milvang-Jensen, C. C. Th\\\"one, D. Malesani, D. Watson, G. Pugliese, J. Bolmer, J. Japelj, J. Palmerio, J. P. U. Fynbo, J. Selsing, K. E. Heintz, K. Wiersema, L. B. Christensen, L. Kaper, M. Sparre, N. R. Tanvir, P. D'Avanzo, P. Jakobsson, R. S\\'anchez-Ram\\'irez, S. Covino, S. D. Vergani, S. Piranomonte, S. Schulze, T. Kr\\\"uhler, V. D'Elia, Z. Cano","submitted_at":"2017-07-03T18:00:03Z","abstract_excerpt":"It is notoriously difficult to localize short $\\gamma$-ray bursts (sGRBs) and their hosts to measure their redshifts. These measurements, however, are critical to constrain the nature of sGRB progenitors, their redshift distribution and the $r$-process element enrichment history of the universe. Here, we present spectroscopy of the host galaxy of GRB111117A and measure its redshift to be $z = 2.211$. This makes GRB111117A the most distant high-confidence short duration GRB detected to date. Our spectroscopic redshift supersedes a lower, previously estimated photometric redshift value for this "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.01452","kind":"arxiv","version":1},"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"}