{"paper":{"title":"NGC 1866: a milestone for understanding the chemical evolution of stellar populations in the LMC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) Departamento de Fisica Teorica y del Cosmos, (3) INAF - Teramo, (4) ESO - Garching, (5) GEPI - Paris, 6), (6) ZAH - Landessternwarte Heidelberg, (7) ESO - Santiago, (8) INAF - Napoli, (9) Cerro Tololo Inter-American Observatory), A. Kaufer (7), A. Mucciarelli (1), A.R. Walker (9) ((1) Astronomy Department, Bologna University, Chile, E. Brocato (3), E. Caffau (5, France, Germany, G. Raimondo (3), I. Musella (8), Italy, L. Pasquini (4), M. Romaniello (4), O. Straniero (3), S. Cristallo (2), Spain, Universidad de Granada, V. Ripepi (8)","submitted_at":"2010-12-07T11:34:26Z","abstract_excerpt":"We present new FLAMES@VLT spectroscopic observations of 30 stars in the field of the LMC stellar cluster NGC 1866. NGC 1866 is one of the few young and massive globular cluster that is close enough so that its stars can be individually studied in detail. Radial velocities have been used to separate stars belonging to the cluster and to the LMC field and the same spectra have been used to derive chemical abundances for a variety of elements, from [Fe/H] to the light (i.e. Na, O, Mg...) to the heavy ones. The average iron abundance of NGC 1866 turns out to be [Fe/H]= -0.43+-0.01 dex (with a disp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.1476","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"}