{"paper":{"title":"J-PLUS: The fraction of calcium white dwarfs along the cooling sequence","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. del Pino, A. Ederoclite, A. Hern\\'an-Caballero, A.J. Cenarro, A. Mar\\'in-Franch, A. Rebassa-Mansergas, B.T. G\\\"ansicke, C. Hern\\'andez-Monteagudo, C. L\\'opez-Sanjuan, D. Crist\\`obal-Hornillos, D. Spinoso, F.M. Jim\\'enez-Esteban, H. Dom\\'inguez S\\'anchez, H. V\\'azquez Rami\\'o, J.A. Fern\\'andez-Ontiveros, J.M. Carrasco, J. Varela, L. Schmidtobreick, L. Sodr\\'e Jr., M.A. Hollands, M. Moles, M.W. O'Brien, N.P. Gentile Fusillo, P.-E. Tremblay, R.A. Dupke, R.E. Angulo, T. Civera","submitted_at":"2024-06-23T09:18:28Z","abstract_excerpt":"We used the Javalambre Photometric Local Universe Survey (J-PLUS) DR2 photometry in twelve optical bands over 2176 deg2 to estimate the fraction of white dwarfs with presence of CaII H+K absorption along the cooling sequence. We compared the J-PLUS photometry against metal-free theoretical models to estimate the equivalent width in the J0395 passband of 10 nm centered at 395 nm (EW_J0395), a proxy to detect calcium absorption. A total of 4399 white dwarfs within 30000 > Teff > 5500 K and mass M > 0.45 Msun were analyzed. Their EW_J0395 distribution was modeled using two populations, correspond"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.16055","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2406.16055/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"}