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dc.contributor.authorSalaris, M.-
dc.contributor.authorIsern, Jordi-
dc.identifier.citationAstrophysical Journal 716(2): 1241-1251 (2010)es_ES
dc.description11 páginas, 13 figuras, 1 tabla.-- El Pdf del artículo es la version pre-print: arXiv:1005.1791v1.-- et al.es_ES
dc.description.abstractWe present a new set of cooling models and isochrones for both H- and He-atmosphere white dwarfs (WDs), incorporating accurate boundary conditions from detailed model atmosphere calculations, and carbon-oxygen chemical abundance profiles based on updated stellar evolution calculations from the BaSTI stellar evolution archive—a theoretical data center for the Virtual Observatory. We discuss and quantify the uncertainties in the cooling times predicted by the models, arising from the treatment of mixing during the central H- and He-burning phases, the number of thermal pulses experienced by the progenitors, progenitor metallicity, and the 12C(α, γ)16O reaction rate. The largest sources of uncertainty turn out to be related to the treatment of convection during the last stages of the progenitor central He-burning phase and the 12C(α, γ)16O reaction rate. We compare our new models to previous calculations performed with the same stellar evolution code, and discuss their application to the estimate of the age of the solar neighborhood and the interpretation of the observed number ratios between H- and He-atmosphere WDs. The new WD sequences and an extensive set of WD isochrones that cover a large range of ages and progenitor metallicities are made publicly available at the official BaSTI Web site.es_ES
dc.description.sponsorshipJ.I. acknowledges the financial support of the MICINN program AYA08-1839/ESP and the 2009SGR/315 of the Generalitat de Catalunya. S.C. and A.P. acknowledge the financial support of INAF through the PRIN MIUR 2007: Multiple stellar populations in globular clusters, and ASI grant ASI-INAF I/016/07/0, the financial support from the Italian Theoretical Virtual Observatory Project as well as the help provided by P. Manzato, M. Molinari, and F. Pasian in improving and maintaining the BaSTI database.es_ES
dc.publisherInstitute of Physics Publishinges_ES
dc.publisherAmerican Astronomical Societyes_ES
dc.subjectGalaxy: diskes_ES
dc.subjectGalaxies: stellar contentes_ES
dc.subjectStars: evolutiones_ES
dc.subjectStars: interiorses_ES
dc.subjectWhite dwarfses_ES
dc.titleA large stellar evolution database for population synthesis studies: VI. White dwarf cooling sequenceses_ES
dc.description.peerreviewedPeer reviewedes_ES
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