{"paper":{"title":"Radial velocity and chemical composition of evolved stars in the open clusters NGC 6940 and Tombaugh 5","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"2), (2) Special Astrophysical Observatory, (3) INAF OAPD), Eugene A. Semenko (2) ((1) Universit\\`a degli studi di Padova, Giovanni Carraro (1, Martina Baratella (1), Russian Academy of Sciences, Valentina D'Orazi (3)","submitted_at":"2018-09-24T10:37:22Z","abstract_excerpt":"We present and discuss medium resolution (R $\\sim$ 13000), high signal-to-noise ($\\mathrm{\\frac{S}{N}} \\sim 100$), spectroscopic observations in the field of the open clusters NGC\\,6940 and Tombaugh\\,5. Spectra were recorded for seven candidate red giant stars in both clusters. For the latter we present the very first chemical abundance analysis. We derive radial velocities for all the stars in NGC\\,6940, confirming membership to the cluster for all of them, while on the same ground we exclude two stars in To\\,5. We perform a chemical abundance analysis of different atomic species, in particul"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.08831","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"}