A nonadiabatic oscillation study of DB white dwarfs

Autores
Gautschy, Alfred; Althaus, Leandro Gabriel
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A self-consistent abundance diffusion treatment in the evolution of cooling white dwarfs permitted a study of the effect of elemental segregation in nonadiabatic, nonradial stability computations. In particular, mode trapping manifesting itself in cyclically varying period separations behaved differently from its appearance in the damping/excitation rates. Another aspect of the investigation concerned the effect of heavy-element traces in homogeneous DB white-dwarf envelopes on their pulsational instability domain. The stellar models are computed with the CGM convection approach; the study can therefore be considered as a test of its performance in nonradial stability analyses.
Fil: Gautschy, Alfred. Ferrachstrasse. 1; Suiza
Fil: Althaus, Leandro Gabriel. 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
Materia
Oscillations
Evolution of stars
White dwarfs
Interior stars
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:11336/39596
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A nonadiabatic oscillation study of DB white dwarfsGautschy, AlfredAlthaus, Leandro GabrielOscillationsEvolution of starsWhite dwarfsInterior starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A self-consistent abundance diffusion treatment in the evolution of cooling white dwarfs permitted a study of the effect of elemental segregation in nonadiabatic, nonradial stability computations. In particular, mode trapping manifesting itself in cyclically varying period separations behaved differently from its appearance in the damping/excitation rates. Another aspect of the investigation concerned the effect of heavy-element traces in homogeneous DB white-dwarf envelopes on their pulsational instability domain. The stellar models are computed with the CGM convection approach; the study can therefore be considered as a test of its performance in nonradial stability analyses.Fil: Gautschy, Alfred. Ferrachstrasse. 1; SuizaFil: Althaus, Leandro Gabriel. 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; ArgentinaEDP Sciences2002-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/39596Gautschy, Alfred; Althaus, Leandro Gabriel; A nonadiabatic oscillation study of DB white dwarfs; EDP Sciences; Astronomy and Astrophysics; 382; 1; 1-2002; 141-1510004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20011607info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2002/04/aa1692/aa1692.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 Técnicas2025-10-22T11:07:27Zoai:ri.conicet.gov.ar:11336/39596instacron: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:34982025-10-22 11:07:27.903CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A nonadiabatic oscillation study of DB white dwarfs
title A nonadiabatic oscillation study of DB white dwarfs
spellingShingle A nonadiabatic oscillation study of DB white dwarfs
Gautschy, Alfred
Oscillations
Evolution of stars
White dwarfs
Interior stars
title_short A nonadiabatic oscillation study of DB white dwarfs
title_full A nonadiabatic oscillation study of DB white dwarfs
title_fullStr A nonadiabatic oscillation study of DB white dwarfs
title_full_unstemmed A nonadiabatic oscillation study of DB white dwarfs
title_sort A nonadiabatic oscillation study of DB white dwarfs
dc.creator.none.fl_str_mv Gautschy, Alfred
Althaus, Leandro Gabriel
author Gautschy, Alfred
author_facet Gautschy, Alfred
Althaus, Leandro Gabriel
author_role author
author2 Althaus, Leandro Gabriel
author2_role author
dc.subject.none.fl_str_mv Oscillations
Evolution of stars
White dwarfs
Interior stars
topic Oscillations
Evolution of stars
White dwarfs
Interior stars
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A self-consistent abundance diffusion treatment in the evolution of cooling white dwarfs permitted a study of the effect of elemental segregation in nonadiabatic, nonradial stability computations. In particular, mode trapping manifesting itself in cyclically varying period separations behaved differently from its appearance in the damping/excitation rates. Another aspect of the investigation concerned the effect of heavy-element traces in homogeneous DB white-dwarf envelopes on their pulsational instability domain. The stellar models are computed with the CGM convection approach; the study can therefore be considered as a test of its performance in nonradial stability analyses.
Fil: Gautschy, Alfred. Ferrachstrasse. 1; Suiza
Fil: Althaus, Leandro Gabriel. 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
description A self-consistent abundance diffusion treatment in the evolution of cooling white dwarfs permitted a study of the effect of elemental segregation in nonadiabatic, nonradial stability computations. In particular, mode trapping manifesting itself in cyclically varying period separations behaved differently from its appearance in the damping/excitation rates. Another aspect of the investigation concerned the effect of heavy-element traces in homogeneous DB white-dwarf envelopes on their pulsational instability domain. The stellar models are computed with the CGM convection approach; the study can therefore be considered as a test of its performance in nonradial stability analyses.
publishDate 2002
dc.date.none.fl_str_mv 2002-01
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/11336/39596
Gautschy, Alfred; Althaus, Leandro Gabriel; A nonadiabatic oscillation study of DB white dwarfs; EDP Sciences; Astronomy and Astrophysics; 382; 1; 1-2002; 141-151
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/39596
identifier_str_mv Gautschy, Alfred; Althaus, Leandro Gabriel; A nonadiabatic oscillation study of DB white dwarfs; EDP Sciences; Astronomy and Astrophysics; 382; 1; 1-2002; 141-151
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/10.1051/0004-6361:20011607
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2002/04/aa1692/aa1692.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
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 12.982451

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