{"paper":{"title":"TOPoS: II. On the bimodality of carbon abundance in CEMP stars. Implications on the early chemical evolution of galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"1), (10) INAF - OA Trieste, 1) ((1) GEPI, (11) INAF- OA Padova, (12) LUPM, (13) School of Physics, 15), (15) DCF - Univ. A. Bello, (16) MAS, 17), (17) PUC - Chile, (18) Leibniz-Institut AIP), 2), (2) ZAH-LSW, (3) INAF - OA Roma, 4), (4) Kavli IPMU, 6), (6) ZAH-ARI, 7, (7) Kavli, 8), (8) Dep A&A Univ, 9), (9) UPJV, A. Chieffi (5), A. Koch (2), Astronomy, B. Plez (12), Calfornia, Cardiff Univ. (14) ESO, E. Caffau (1, F. Hammer (1), F. Spite (1), H. G. Ludwig (2, IPAC, L. Monaco (14, L. Sbordone (16, M. Limongi (3, M. Spite (2), M. Steffen (18, N. Christlieb (2), Observatoire de Paris, P. Bonifacio (1), P.C. Clark (13, P. Fran\\c{c}ois (1, P. Molaro (10), R. Cayrel (1), R.S. Klessen (6, S.C.O. Glover (6), Stanford Univ., S. Zaggia (11), Univ. Montpellier, Univ. Picardie, Univ. Tokyo (5) INAF - IASFC","submitted_at":"2015-04-22T20:00:44Z","abstract_excerpt":"In the course of the TOPoS (Turn Off Primordial Stars) survey, aimed at discovering the lowest metallicity stars, we have found several carbon-enhanced metal-poor (CEMP) stars. We here present our analysis of six CEMP stars. Calcium and carbon are the only elements that can be measured in all six stars. The range is -5.0<=[Ca/H]< -2.1 and 7.12<=A(C)<=8.65. For star SDSS J1742+2531 we were able to detect three FeI lines from which we deduced [Fe/H]=-4.80, from four CaII lines we derived [Ca/H]=-4.56, and from synthesis of the G-band we derived A(C)=7.26. For SDSS J1035+0641 we were not able to "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.05963","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"}