Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models

Autores
Romero, A. D.; Kepler, S. O.; Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; Fraga, L.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the first asteroseismological study for 42 massive ZZ Ceti stars based on a large set of fully evolutionary carbon-oxygen core DA white dwarf models characterized by a detailed and consistent chemical inner profile for the core and the envelope. Our sample comprises all of the ZZ Ceti stars with spectroscopic stellar masses between 0.72 and 1.05 M ⊙ known to date. The asteroseismological analysis of a set of 42 stars enables study of the ensemble properties of the massive, pulsating white dwarf stars with carbon-oxygen cores, in particular the thickness of the hydrogen envelope and the stellar mass. A significant fraction of stars in our sample have stellar mass that is high enough to crystallize at the effective temperatures of the ZZ Ceti instability strip, which enables us to study the effects of crystallization on the pulsation properties of these stars. Our results show that the phase diagram presented in Horowitz et al. seems to be a good representation of the crystallization process inside white dwarf stars, in agreement with the results from white dwarf luminosity function in globular clusters.
Fil: Romero, A. D.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Kepler, S. O.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Corsico, Alejandro Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Althaus, Leandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Fraga, L.. Southern Observatory for Astrophysical Research; Chile. Laboratorio Nacional de Astrofísica; Brasil
Materia
Evolution of Stars
Zz Ceti Stars (Estrella)
Interior Stars
Oscillations of Stars
White Dwarfs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/10453
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/10453
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Asteroseismological study of massive ZZ Ceti stars with fully evolutionary modelsRomero, A. D.Kepler, S. O.Corsico, Alejandro HugoAlthaus, Leandro GabrielFraga, L.Evolution of StarsZz Ceti Stars (Estrella)Interior StarsOscillations of StarsWhite Dwarfshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present the first asteroseismological study for 42 massive ZZ Ceti stars based on a large set of fully evolutionary carbon-oxygen core DA white dwarf models characterized by a detailed and consistent chemical inner profile for the core and the envelope. Our sample comprises all of the ZZ Ceti stars with spectroscopic stellar masses between 0.72 and 1.05 M <sub>⊙</sub> known to date. The asteroseismological analysis of a set of 42 stars enables study of the ensemble properties of the massive, pulsating white dwarf stars with carbon-oxygen cores, in particular the thickness of the hydrogen envelope and the stellar mass. A significant fraction of stars in our sample have stellar mass that is high enough to crystallize at the effective temperatures of the ZZ Ceti instability strip, which enables us to study the effects of crystallization on the pulsation properties of these stars. Our results show that the phase diagram presented in Horowitz et al. seems to be a good representation of the crystallization process inside white dwarf stars, in agreement with the results from white dwarf luminosity function in globular clusters.Fil: Romero, A. D.. Universidade Federal do Rio Grande do Sul; BrasilFil: Kepler, S. O.. Universidade Federal do Rio Grande do Sul; BrasilFil: Corsico, Alejandro Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Althaus, Leandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Fraga, L.. Southern Observatory for Astrophysical Research; Chile. Laboratorio Nacional de Astrofísica; BrasilIop Publishing2013-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10453Romero, A. D.; Kepler, S. O.; Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; Fraga, L.; Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models; Iop Publishing; Astrophysical Journal; 779; 12-2013; 58-820004-637Xenginfo:eu-repo/semantics/altIdentifier/arxiv/http://dx.doi.org/10.1088/0004-637X/779/1/58info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/779/1/58/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:13:13Zoai:ri.conicet.gov.ar:11336/10453instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:13:13.533CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
title Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
spellingShingle Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
Romero, A. D.
Evolution of Stars
Zz Ceti Stars (Estrella)
Interior Stars
Oscillations of Stars
White Dwarfs
title_short Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
title_full Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
title_fullStr Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
title_full_unstemmed Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
title_sort Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
dc.creator.none.fl_str_mv Romero, A. D.
Kepler, S. O.
Corsico, Alejandro Hugo
Althaus, Leandro Gabriel
Fraga, L.
author Romero, A. D.
author_facet Romero, A. D.
Kepler, S. O.
Corsico, Alejandro Hugo
Althaus, Leandro Gabriel
Fraga, L.
author_role author
author2 Kepler, S. O.
Corsico, Alejandro Hugo
Althaus, Leandro Gabriel
Fraga, L.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Evolution of Stars
Zz Ceti Stars (Estrella)
Interior Stars
Oscillations of Stars
White Dwarfs
topic Evolution of Stars
Zz Ceti Stars (Estrella)
Interior Stars
Oscillations of Stars
White Dwarfs
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present the first asteroseismological study for 42 massive ZZ Ceti stars based on a large set of fully evolutionary carbon-oxygen core DA white dwarf models characterized by a detailed and consistent chemical inner profile for the core and the envelope. Our sample comprises all of the ZZ Ceti stars with spectroscopic stellar masses between 0.72 and 1.05 M <sub>⊙</sub> known to date. The asteroseismological analysis of a set of 42 stars enables study of the ensemble properties of the massive, pulsating white dwarf stars with carbon-oxygen cores, in particular the thickness of the hydrogen envelope and the stellar mass. A significant fraction of stars in our sample have stellar mass that is high enough to crystallize at the effective temperatures of the ZZ Ceti instability strip, which enables us to study the effects of crystallization on the pulsation properties of these stars. Our results show that the phase diagram presented in Horowitz et al. seems to be a good representation of the crystallization process inside white dwarf stars, in agreement with the results from white dwarf luminosity function in globular clusters.
Fil: Romero, A. D.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Kepler, S. O.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Corsico, Alejandro Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Althaus, Leandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Fraga, L.. Southern Observatory for Astrophysical Research; Chile. Laboratorio Nacional de Astrofísica; Brasil
description We present the first asteroseismological study for 42 massive ZZ Ceti stars based on a large set of fully evolutionary carbon-oxygen core DA white dwarf models characterized by a detailed and consistent chemical inner profile for the core and the envelope. Our sample comprises all of the ZZ Ceti stars with spectroscopic stellar masses between 0.72 and 1.05 M <sub>⊙</sub> known to date. The asteroseismological analysis of a set of 42 stars enables study of the ensemble properties of the massive, pulsating white dwarf stars with carbon-oxygen cores, in particular the thickness of the hydrogen envelope and the stellar mass. A significant fraction of stars in our sample have stellar mass that is high enough to crystallize at the effective temperatures of the ZZ Ceti instability strip, which enables us to study the effects of crystallization on the pulsation properties of these stars. Our results show that the phase diagram presented in Horowitz et al. seems to be a good representation of the crystallization process inside white dwarf stars, in agreement with the results from white dwarf luminosity function in globular clusters.
publishDate 2013
dc.date.none.fl_str_mv 2013-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/10453
Romero, A. D.; Kepler, S. O.; Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; Fraga, L.; Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models; Iop Publishing; Astrophysical Journal; 779; 12-2013; 58-82
0004-637X
url http://hdl.handle.net/11336/10453
identifier_str_mv Romero, A. D.; Kepler, S. O.; Corsico, Alejandro Hugo; Althaus, Leandro Gabriel; Fraga, L.; Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models; Iop Publishing; Astrophysical Journal; 779; 12-2013; 58-82
0004-637X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/arxiv/http://dx.doi.org/10.1088/0004-637X/779/1/58
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/779/1/58/meta
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Iop Publishing
publisher.none.fl_str_mv Iop Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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