Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores

Autores
Corsico, Alejandro Hugo; García Berro, Enrique; Althaus, Leandro Gabriel; Isern, J.
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We explore the adiabatic pulsational properties of massive white dwarf stars with hydrogen-rich envelopes and oxygen/neon and carbon/oxygen cores. To this end, we compute the cooling of massive white dwarf models for both core compositions taking into account the evolutionary history of the progenitor stars and the chemical evolution caused by time-dependent element diffusion. In particular, for the oxygen/neon models we adopt the chemical profile resulting from repeated carbon-burning shell flashes expected in very massive white dwarf progenitors. For carbon/oxygen white dwarfs we consider the chemical profiles resulting from phase separation upon crystallization. For both compositions we also take into account the effects of crystallization on the oscillation eigenmodes. We find that the pulsational properties of oxygen/neon white dwarfs are noticeably different from those made of carbon/oxygen, thus making asteroseismological techniques a promising way to distinguish between the two types of stars and, hence, to obtain valuable information about their progenitors.
Fil: Corsico, Alejandro Hugo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: García Berro, Enrique. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Althaus, Leandro Gabriel. Universidad Politecnica de Catalunya; España. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Isern, J.. Universidad Politecnica de Catalunya; España
Materia
Evolution of stars
White dwarfs
Oscillations
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:11336/39092
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon coresCorsico, Alejandro HugoGarcía Berro, EnriqueAlthaus, Leandro GabrielIsern, J.Evolution of starsWhite dwarfsOscillationshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We explore the adiabatic pulsational properties of massive white dwarf stars with hydrogen-rich envelopes and oxygen/neon and carbon/oxygen cores. To this end, we compute the cooling of massive white dwarf models for both core compositions taking into account the evolutionary history of the progenitor stars and the chemical evolution caused by time-dependent element diffusion. In particular, for the oxygen/neon models we adopt the chemical profile resulting from repeated carbon-burning shell flashes expected in very massive white dwarf progenitors. For carbon/oxygen white dwarfs we consider the chemical profiles resulting from phase separation upon crystallization. For both compositions we also take into account the effects of crystallization on the oscillation eigenmodes. We find that the pulsational properties of oxygen/neon white dwarfs are noticeably different from those made of carbon/oxygen, thus making asteroseismological techniques a promising way to distinguish between the two types of stars and, hence, to obtain valuable information about their progenitors.Fil: Corsico, Alejandro Hugo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: García Berro, Enrique. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; EspañaFil: Althaus, Leandro Gabriel. Universidad Politecnica de Catalunya; España. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Isern, J.. Universidad Politecnica de Catalunya; EspañaEDP Sciences2004-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/39092Corsico, Alejandro Hugo; García Berro, Enrique; Althaus, Leandro Gabriel; Isern, J.; Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores; EDP Sciences; Astronomy and Astrophysics; 427; 3; 12-2004; 923-9320004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20040416info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2004/45/aa0416-04/aa0416-04.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:38:06Zoai:ri.conicet.gov.ar:11336/39092instacron: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 09:38:06.816CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
title Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
spellingShingle Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
Corsico, Alejandro Hugo
Evolution of stars
White dwarfs
Oscillations
title_short Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
title_full Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
title_fullStr Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
title_full_unstemmed Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
title_sort Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
dc.creator.none.fl_str_mv Corsico, Alejandro Hugo
García Berro, Enrique
Althaus, Leandro Gabriel
Isern, J.
author Corsico, Alejandro Hugo
author_facet Corsico, Alejandro Hugo
García Berro, Enrique
Althaus, Leandro Gabriel
Isern, J.
author_role author
author2 García Berro, Enrique
Althaus, Leandro Gabriel
Isern, J.
author2_role author
author
author
dc.subject.none.fl_str_mv Evolution of stars
White dwarfs
Oscillations
topic Evolution of stars
White dwarfs
Oscillations
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 explore the adiabatic pulsational properties of massive white dwarf stars with hydrogen-rich envelopes and oxygen/neon and carbon/oxygen cores. To this end, we compute the cooling of massive white dwarf models for both core compositions taking into account the evolutionary history of the progenitor stars and the chemical evolution caused by time-dependent element diffusion. In particular, for the oxygen/neon models we adopt the chemical profile resulting from repeated carbon-burning shell flashes expected in very massive white dwarf progenitors. For carbon/oxygen white dwarfs we consider the chemical profiles resulting from phase separation upon crystallization. For both compositions we also take into account the effects of crystallization on the oscillation eigenmodes. We find that the pulsational properties of oxygen/neon white dwarfs are noticeably different from those made of carbon/oxygen, thus making asteroseismological techniques a promising way to distinguish between the two types of stars and, hence, to obtain valuable information about their progenitors.
Fil: Corsico, Alejandro Hugo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: García Berro, Enrique. Universidad Politecnica de Catalunya; España. Institut d’Estudis Espacials de Catalunya; España
Fil: Althaus, Leandro Gabriel. Universidad Politecnica de Catalunya; España. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Isern, J.. Universidad Politecnica de Catalunya; España
description We explore the adiabatic pulsational properties of massive white dwarf stars with hydrogen-rich envelopes and oxygen/neon and carbon/oxygen cores. To this end, we compute the cooling of massive white dwarf models for both core compositions taking into account the evolutionary history of the progenitor stars and the chemical evolution caused by time-dependent element diffusion. In particular, for the oxygen/neon models we adopt the chemical profile resulting from repeated carbon-burning shell flashes expected in very massive white dwarf progenitors. For carbon/oxygen white dwarfs we consider the chemical profiles resulting from phase separation upon crystallization. For both compositions we also take into account the effects of crystallization on the oscillation eigenmodes. We find that the pulsational properties of oxygen/neon white dwarfs are noticeably different from those made of carbon/oxygen, thus making asteroseismological techniques a promising way to distinguish between the two types of stars and, hence, to obtain valuable information about their progenitors.
publishDate 2004
dc.date.none.fl_str_mv 2004-12
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/11336/39092
Corsico, Alejandro Hugo; García Berro, Enrique; Althaus, Leandro Gabriel; Isern, J.; Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores; EDP Sciences; Astronomy and Astrophysics; 427; 3; 12-2004; 923-932
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/39092
identifier_str_mv Corsico, Alejandro Hugo; García Berro, Enrique; Althaus, Leandro Gabriel; Isern, J.; Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores; EDP Sciences; Astronomy and Astrophysics; 427; 3; 12-2004; 923-932
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20040416
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2004/45/aa0416-04/aa0416-04.html
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
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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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