New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars

Autores
Corsico, Alejandro Hugo; de Gerónimo, Francisco César; Camisassa, María Eugenia; Althaus, Leandro Gabriel
Año de publicación
2020
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Ultra-massive hydrogen-rich (DA spectral type) white dwarf (WD) stars (M * > 1M ) coming from single-star evolution are expected to harbor cores made of 16 O and 20 Ne, resulting from semi-degeneratecarbon burning when the progenitor star evolves through the super asymptotic giant branch (S-AGB) phase. These stars are expected to be crystallized by the time they reach the ZZ Ceti instability strip (T eff ∼ 12 500 K). Theoretical models predict that crystallization leads to a separation of 16 O and 20 Ne in the core of ultra-massive WDs, which impacts their pulsational properties. This property offers a unique opportunity to study the processes of crystallization. Here, we present the first results of a detailed asteroseismic analysis of the best-studied ultra-massive ZZ Ceti star BPM 37093. As a second step, we plan to repeat this analysis using ultra-massive DA WD models with C/O cores in order to study the possibility of elucidating the core chemical composition of BPM 37093 and shed some light on its possible evolutionary origin. We also plan to extend this kind of analyses to other stars observed from the ground and also from space missions likeKepler and TESS.
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: de Gerónimo, Francisco César. 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: Camisassa, María Eugenia. 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; Argentina
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
Stars and their Variability observed from Space: Celebrating the birthday of BRITE-Constellation
Viena
Austria
University of Viena
Materia
stars: pulsations
stars: interiors
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:11336/211204
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/211204
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New fully evolutionary models for asteroseismology of ultra- massive white dwarf starsCorsico, Alejandro Hugode Gerónimo, Francisco CésarCamisassa, María EugeniaAlthaus, Leandro Gabrielstars: pulsationsstars: interiorsstars: white dwarfshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Ultra-massive hydrogen-rich (DA spectral type) white dwarf (WD) stars (M * > 1M ) coming from single-star evolution are expected to harbor cores made of 16 O and 20 Ne, resulting from semi-degeneratecarbon burning when the progenitor star evolves through the super asymptotic giant branch (S-AGB) phase. These stars are expected to be crystallized by the time they reach the ZZ Ceti instability strip (T eff ∼ 12 500 K). Theoretical models predict that crystallization leads to a separation of 16 O and 20 Ne in the core of ultra-massive WDs, which impacts their pulsational properties. This property offers a unique opportunity to study the processes of crystallization. Here, we present the first results of a detailed asteroseismic analysis of the best-studied ultra-massive ZZ Ceti star BPM 37093. As a second step, we plan to repeat this analysis using ultra-massive DA WD models with C/O cores in order to study the possibility of elucidating the core chemical composition of BPM 37093 and shed some light on its possible evolutionary origin. We also plan to extend this kind of analyses to other stars observed from the ground and also from space missions likeKepler and TESS.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: de Gerónimo, Francisco César. 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: Camisassa, María Eugenia. 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; ArgentinaFil: 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; ArgentinaStars and their Variability observed from Space: Celebrating the birthday of BRITE-ConstellationVienaAustriaUniversity of VienaUniversity of Viena2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectConferenciaBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/211204New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars; Stars and their Variability observed from Space: Celebrating the birthday of BRITE-Constellation; Viena; Austria; 2019; 237-240CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://starsandspace.univie.ac.at/home/proceeding/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:47:13Zoai:ri.conicet.gov.ar:11336/211204instacron: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 10:47:13.81CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars
title New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars
spellingShingle New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars
Corsico, Alejandro Hugo
stars: pulsations
stars: interiors
stars: white dwarfs
title_short New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars
title_full New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars
title_fullStr New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars
title_full_unstemmed New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars
title_sort New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars
dc.creator.none.fl_str_mv Corsico, Alejandro Hugo
de Gerónimo, Francisco César
Camisassa, María Eugenia
Althaus, Leandro Gabriel
author Corsico, Alejandro Hugo
author_facet Corsico, Alejandro Hugo
de Gerónimo, Francisco César
Camisassa, María Eugenia
Althaus, Leandro Gabriel
author_role author
author2 de Gerónimo, Francisco César
Camisassa, María Eugenia
Althaus, Leandro Gabriel
author2_role author
author
author
dc.subject.none.fl_str_mv stars: pulsations
stars: interiors
stars: white dwarfs
topic stars: pulsations
stars: interiors
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 Ultra-massive hydrogen-rich (DA spectral type) white dwarf (WD) stars (M * > 1M ) coming from single-star evolution are expected to harbor cores made of 16 O and 20 Ne, resulting from semi-degeneratecarbon burning when the progenitor star evolves through the super asymptotic giant branch (S-AGB) phase. These stars are expected to be crystallized by the time they reach the ZZ Ceti instability strip (T eff ∼ 12 500 K). Theoretical models predict that crystallization leads to a separation of 16 O and 20 Ne in the core of ultra-massive WDs, which impacts their pulsational properties. This property offers a unique opportunity to study the processes of crystallization. Here, we present the first results of a detailed asteroseismic analysis of the best-studied ultra-massive ZZ Ceti star BPM 37093. As a second step, we plan to repeat this analysis using ultra-massive DA WD models with C/O cores in order to study the possibility of elucidating the core chemical composition of BPM 37093 and shed some light on its possible evolutionary origin. We also plan to extend this kind of analyses to other stars observed from the ground and also from space missions likeKepler and TESS.
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: de Gerónimo, Francisco César. 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: Camisassa, María Eugenia. 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; Argentina
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
Stars and their Variability observed from Space: Celebrating the birthday of BRITE-Constellation
Viena
Austria
University of Viena
description Ultra-massive hydrogen-rich (DA spectral type) white dwarf (WD) stars (M * > 1M ) coming from single-star evolution are expected to harbor cores made of 16 O and 20 Ne, resulting from semi-degeneratecarbon burning when the progenitor star evolves through the super asymptotic giant branch (S-AGB) phase. These stars are expected to be crystallized by the time they reach the ZZ Ceti instability strip (T eff ∼ 12 500 K). Theoretical models predict that crystallization leads to a separation of 16 O and 20 Ne in the core of ultra-massive WDs, which impacts their pulsational properties. This property offers a unique opportunity to study the processes of crystallization. Here, we present the first results of a detailed asteroseismic analysis of the best-studied ultra-massive ZZ Ceti star BPM 37093. As a second step, we plan to repeat this analysis using ultra-massive DA WD models with C/O cores in order to study the possibility of elucidating the core chemical composition of BPM 37093 and shed some light on its possible evolutionary origin. We also plan to extend this kind of analyses to other stars observed from the ground and also from space missions likeKepler and TESS.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Conferencia
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/211204
New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars; Stars and their Variability observed from Space: Celebrating the birthday of BRITE-Constellation; Viena; Austria; 2019; 237-240
CONICET Digital
CONICET
url http://hdl.handle.net/11336/211204
identifier_str_mv New fully evolutionary models for asteroseismology of ultra- massive white dwarf stars; Stars and their Variability observed from Space: Celebrating the birthday of BRITE-Constellation; Viena; Austria; 2019; 237-240
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://starsandspace.univie.ac.at/home/proceeding/
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.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv University of Viena
publisher.none.fl_str_mv University of Viena
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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