{"paper":{"title":"The Gaia-ESO survey: Calibrating a relationship between Age and the [C/N] abundance ratio with open clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Bayo, A. Bragaglia, A. C. Lanzafame, A. Drazdauskas, A. Frasca, A. Gonneau, A. Hourihane, A. Korn, A. Vallenari, C. Sahlholdt, C. Worley, E. Franciosini, E. Friel, E. Pancino, E. Stonkute, E. Tognelli, F. Damiani, F. Jimenez-Esteban, G. Carraro, G. Casali, G. Gilmore, G. Kordopatis, G. Sacco, G. Tautvaisiene, J. Lewis, L. Magrini, L. Morbidelli, L. Prisinzano, L. Spina, M. Bergemann, M. Van der Swaelmen, N. Lagarde, N. Sanna, P. G. Prada Moroni, P. Jofre, R. Bonito, R. D. Jeffries, R. Jackson, R. Minkeviciute, R. Smiljanic, S. Degl'Innocenti, S. E. Koposov, S. Feltzing, S. G. Sousa, S. Martell, S. Mikolaitis, S. Randich, S. Zaggia, T. Bensby, T. Masseron, U. Heiter, V. Bagdonas, V. Roccatagliata, Y. Chorniy","submitted_at":"2019-07-17T06:11:44Z","abstract_excerpt":"In the era of large high-resolution spectroscopic surveys, high-quality spectra can contribute to our understanding of the Galactic chemical evolution, providing chemical abundances belonging to the different nucleosynthesis channels, and also providing constraints to stellar age. Some abundance ratios have been proven to be excellent indicators of stellar ages. We aim at providing an empirical relationship between stellar ages and [C/N] using, as calibrators, open star clusters observed by both the Gaia-ESO and APOGEE surveys. We use stellar parameters and abundances from the Gaia-ESO and APO"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.07350","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1907.07350/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}