{"paper":{"title":"Barium abundance in red giants of NGC 6752. Non-local thermodynamic equilibrium and three-dimensional effects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"1), (2) Institute of Theoretical Physics, (3) Department of Astronomy, 4), 4) ((1) Vilnius Univ. Astronomical Observatory, (4) GEPI, (5) Zentrum f\\\"ur Astronomie der Universit\\\"at Heidelberg), A. Ku\\v{c}inskas (2, Astronomical Observatory, Astronomy, E. Caffau (5, H.-G. Ludwig (5), Obs. de Paris, Odessa National University, P. Bonifacio (4), S. A. Korotin (3), S. M. Andrievsky (3, T. V. Mishenina (3), V. Dobrovolskas (1), Vilnius Univ.","submitted_at":"2012-03-14T16:13:02Z","abstract_excerpt":"(Abridged) Aims: We study the effects related to departures from non-local thermodynamic equilibrium (NLTE) and homogeneity in the atmospheres of red giant stars in Galactic globular cluster NGC 6752, to assess their influence on the formation of Ba II lines. Methods: One-dimensional (1D) local thermodynamic equilibrium (LTE) and 1D NLTE barium abundances were derived using classical 1D ATLAS stellar model atmospheres. The three-dimensional (3D) LTE abundances were obtained for 8 red giants on the lower RGB, by adjusting their 1D LTE abundances using 3D-1D abundance corrections, i.e., the diff"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3124","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"}