{"paper":{"title":"A primordial star in the heart of the Lion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"(10) Univ. de Nice Sophia Antipolis, (11) INAF - Osservatorio Astrofisico di Arcetri), 2, 2), (2) GEPI - Obs. de Paris, 3), (3) ESO - Santiago, 4), (4) Univ. de Picardie Jules Verne, (5) INAF - Osservatorio Astronomico di Padova, (6) Leibniz Institut f\\\"ur Astrophysik Potsdam, (7) Institute of Astronomy, (8) INAF - Osservatorio Astronomico di Trieste, (9) LUPM - Univ. Montpellier 2, B. Plez (9), CNRS, E. Caffau (1, F. Hammer (2), F. Spite (2), H.-G. Ludwig (1, Lab. Cassiop\\'ee, L. Mashonkina (7), L. Monaco (3), L. Sbordone (1, M. Spite (2), M. Steffen (6), OCA, P. Bonifacio (2, P. Fran\\c{c}ois (2, P. Molaro (8), R. Cayrel (2), Russian Academy of Sciences, S. Randich (11)((1) ZAH-LSW Heidelberg, S. Zaggia (5), Univ. Paris Diderot, V. Hill (10)","submitted_at":"2012-03-12T20:00:00Z","abstract_excerpt":"Context: The discovery and chemical analysis of extremely metal-poor stars permit a better understanding of the star formation of the first generation of stars and of the Universe emerging from the Big Bang. aims: We report the study of a primordial star situated in the centre of the constellation Leo (SDSS J102915+172027). method: The star, selected from the low resolution-spectrum of the Sloan Digital Sky Survey, was observed at intermediate (with X-Shooter at VLT) and at high spectral resolution (with UVES at VLT). The stellar parameters were derived from the photometry. The standard spectr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.2607","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"}