Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models

Autores
Romero, Alejandra Daniela; Córsico, Alejandro Hugo; Althaus, Leandro Gabriel; Kepler, S. O.; Castanheira, B. G.; Miller Bertolami, Marcelo Miguel
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
ZZ Ceti stars form the most numerous group of degenerate variable stars. They are otherwise normal DA (H-rich atmospheres) white dwarfs that exhibit pulsations. Here, we present an asteroseismological analysis for 44 bright ZZ Ceti stars based on a new set of fully evolutionary DA white dwarf models characterized by detailed chemical profiles from the centre to the surface. One of our targets is the archetypal ZZ Ceti star G117-B15A, for which we obtain an asteroseismological model with an effective temperature and a surface gravity in excellent agreement with the spectroscopy. The asteroseismological analysis of a set of 44 ZZ Ceti stars has the potential to characterize the global properties of the class, in particular the thicknesses of the hydrogen envelope and the stellar masses. Our results support the belief that white dwarfs in the solar neighbourhood harbour a broad range of hydrogen-layer thickness.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Astroseismology
Stars: evolution
Stars: individual: ZZCeti stars
Stars: interiors
Stars: oscillations
White dwarfs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84684
Acceder
id SEDICI_db0bc6ab00040fd493c6bad982d529db
oai_identifier_str oai:sedici.unlp.edu.ar:10915/84684
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary modelsRomero, Alejandra DanielaCórsico, Alejandro HugoAlthaus, Leandro GabrielKepler, S. O.Castanheira, B. G.Miller Bertolami, Marcelo MiguelCiencias AstronómicasAstroseismologyStars: evolutionStars: individual: ZZCeti starsStars: interiorsStars: oscillationsWhite dwarfsZZ Ceti stars form the most numerous group of degenerate variable stars. They are otherwise normal DA (H-rich atmospheres) white dwarfs that exhibit pulsations. Here, we present an asteroseismological analysis for 44 bright ZZ Ceti stars based on a new set of fully evolutionary DA white dwarf models characterized by detailed chemical profiles from the centre to the surface. One of our targets is the archetypal ZZ Ceti star G117-B15A, for which we obtain an asteroseismological model with an effective temperature and a surface gravity in excellent agreement with the spectroscopy. The asteroseismological analysis of a set of 44 ZZ Ceti stars has the potential to characterize the global properties of the class, in particular the thicknesses of the hydrogen envelope and the stellar masses. Our results support the belief that white dwarfs in the solar neighbourhood harbour a broad range of hydrogen-layer thickness.Facultad de Ciencias Astronómicas y Geofísicas2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1462-1480http://sedici.unlp.edu.ar/handle/10915/84684enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.20134.xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:05Zoai:sedici.unlp.edu.ar:10915/84684Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:05.528SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
title Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
spellingShingle Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
Romero, Alejandra Daniela
Ciencias Astronómicas
Astroseismology
Stars: evolution
Stars: individual: ZZCeti stars
Stars: interiors
Stars: oscillations
White dwarfs
title_short Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
title_full Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
title_fullStr Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
title_full_unstemmed Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
title_sort Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
dc.creator.none.fl_str_mv Romero, Alejandra Daniela
Córsico, Alejandro Hugo
Althaus, Leandro Gabriel
Kepler, S. O.
Castanheira, B. G.
Miller Bertolami, Marcelo Miguel
author Romero, Alejandra Daniela
author_facet Romero, Alejandra Daniela
Córsico, Alejandro Hugo
Althaus, Leandro Gabriel
Kepler, S. O.
Castanheira, B. G.
Miller Bertolami, Marcelo Miguel
author_role author
author2 Córsico, Alejandro Hugo
Althaus, Leandro Gabriel
Kepler, S. O.
Castanheira, B. G.
Miller Bertolami, Marcelo Miguel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Astroseismology
Stars: evolution
Stars: individual: ZZCeti stars
Stars: interiors
Stars: oscillations
White dwarfs
topic Ciencias Astronómicas
Astroseismology
Stars: evolution
Stars: individual: ZZCeti stars
Stars: interiors
Stars: oscillations
White dwarfs
dc.description.none.fl_txt_mv ZZ Ceti stars form the most numerous group of degenerate variable stars. They are otherwise normal DA (H-rich atmospheres) white dwarfs that exhibit pulsations. Here, we present an asteroseismological analysis for 44 bright ZZ Ceti stars based on a new set of fully evolutionary DA white dwarf models characterized by detailed chemical profiles from the centre to the surface. One of our targets is the archetypal ZZ Ceti star G117-B15A, for which we obtain an asteroseismological model with an effective temperature and a surface gravity in excellent agreement with the spectroscopy. The asteroseismological analysis of a set of 44 ZZ Ceti stars has the potential to characterize the global properties of the class, in particular the thicknesses of the hydrogen envelope and the stellar masses. Our results support the belief that white dwarfs in the solar neighbourhood harbour a broad range of hydrogen-layer thickness.
Facultad de Ciencias Astronómicas y Geofísicas
description ZZ Ceti stars form the most numerous group of degenerate variable stars. They are otherwise normal DA (H-rich atmospheres) white dwarfs that exhibit pulsations. Here, we present an asteroseismological analysis for 44 bright ZZ Ceti stars based on a new set of fully evolutionary DA white dwarf models characterized by detailed chemical profiles from the centre to the surface. One of our targets is the archetypal ZZ Ceti star G117-B15A, for which we obtain an asteroseismological model with an effective temperature and a surface gravity in excellent agreement with the spectroscopy. The asteroseismological analysis of a set of 44 ZZ Ceti stars has the potential to characterize the global properties of the class, in particular the thicknesses of the hydrogen envelope and the stellar masses. Our results support the belief that white dwarfs in the solar neighbourhood harbour a broad range of hydrogen-layer thickness.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/84684
url http://sedici.unlp.edu.ar/handle/10915/84684
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.20134.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1462-1480
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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