{"paper":{"title":"Young [$\\alpha$/Fe]-enhanced stars discovered by CoRoT and APOGEE: What is their origin?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. Miglio, A. Noels, B. Mosser, B. X. Santiago, C. Allende Prieto, C. Chiappini, D. Nidever, D. P. Schneider, F. Anders, F. Baudin, I. Minchev, J. Holtzman, J. Montalban, K. Cunha, K. Pan, K. Stassun, L. Girardi, L. N. da Costa, M. A. G. Maia, M. D. Shetrone, M. Martig, M. Schultheis, M. Steinmetz, M. Valentini, N. Theme{\\ss}l, P. Harding, R. A. Garcia, R. de Assis Peralta, R. P. Schiavon, S. Hekker, S. Majewski, S. Mathur, Sz. Meszaros, T. C. Beers, T. Kallinger, T. Morel, T. S. Rodrigues","submitted_at":"2015-03-24T11:34:16Z","abstract_excerpt":"We report the discovery of a group of apparently young CoRoT red-giant stars exhibiting enhanced [alpha/Fe] abundance ratios (as determined from APOGEE spectra) with respect to Solar values. Their existence is not explained by standard chemical evolution models of the Milky Way, and shows that the chemical-enrichment history of the Galactic disc is more complex. We find similar stars in previously published samples for which isochrone-ages could be robustly obtained, although in smaller relative numbers, which could explain why these stars have not received prior attention. The young [alpha/Fe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06990","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"}