WD J004917.14−252556.81: the most massive pulsating white dwarf

Autores
Kilic, Mukremin; Corsico, Alejandro Hugo; Moss, Adam G.; Jewett, Gracyn; de Gerónimo, Francisco César; Althaus, Leandro Gabriel
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present Apache Point Observatory (APO) and Gemini time-series photometry of WD J004917.14−252556.81, an ultramassive DA white dwarf with Teff = 13 020 K and log g = 9.34. We detect variability at two significant frequencies, making J0049−2525 the most massive pulsating white dwarf currently known with M★ = 1.31 M☉ (for a CO core) or 1.26 M☉ (for an ONe core). J0049−2525 does not display any of the signatures of binary mergers, there is no evidence of magnetism, large tangential velocity, or rapid rotation. Hence, it likely formed through single star evolution and is likely to have an ONe core. Evolutionary models indicate that its interior is ≳99 per cent crystallized. Asteroseismology offers an unprecedented opportunity to probe its interior structure. However, the relatively few pulsation modes detected limit our ability to obtain robust seismic solutions. Instead, we provide several representative solutions that could explain the observed properties of this star. Extensive follow-up time-series photometry of this unique target has the potential to discover a significant number of additional pulsation modes that would help overcome the degeneracies in the asteroseismic fits, and enable us to probe the interior of an ≈1.3 M☉ crystallized white dwarf.
Fil: Kilic, Mukremin. Oklahoma State University; Estados Unidos
Fil: Corsico, Alejandro Hugo. 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: Moss, Adam G.. Oklahoma State University; Estados Unidos
Fil: Jewett, Gracyn. Oklahoma State University; Estados Unidos
Fil: de Gerónimo, Francisco César. Pontificia Universidad Católica de Chile; Chile. 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: 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
EVOLUTION-STARS
GENERAL-WHITE DWARFS
OSCILLATIONS-STARS
STARS
VARIABLES
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:11336/235610
Acceder
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network_name_str CONICET Digital (CONICET)
spelling WD J004917.14−252556.81: the most massive pulsating white dwarfKilic, MukreminCorsico, Alejandro HugoMoss, Adam G.Jewett, Gracynde Gerónimo, Francisco CésarAlthaus, Leandro GabrielEVOLUTION-STARSGENERAL-WHITE DWARFSOSCILLATIONS-STARSSTARSVARIABLEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present Apache Point Observatory (APO) and Gemini time-series photometry of WD J004917.14−252556.81, an ultramassive DA white dwarf with Teff = 13 020 K and log g = 9.34. We detect variability at two significant frequencies, making J0049−2525 the most massive pulsating white dwarf currently known with M★ = 1.31 M☉ (for a CO core) or 1.26 M☉ (for an ONe core). J0049−2525 does not display any of the signatures of binary mergers, there is no evidence of magnetism, large tangential velocity, or rapid rotation. Hence, it likely formed through single star evolution and is likely to have an ONe core. Evolutionary models indicate that its interior is ≳99 per cent crystallized. Asteroseismology offers an unprecedented opportunity to probe its interior structure. However, the relatively few pulsation modes detected limit our ability to obtain robust seismic solutions. Instead, we provide several representative solutions that could explain the observed properties of this star. Extensive follow-up time-series photometry of this unique target has the potential to discover a significant number of additional pulsation modes that would help overcome the degeneracies in the asteroseismic fits, and enable us to probe the interior of an ≈1.3 M☉ crystallized white dwarf.Fil: Kilic, Mukremin. Oklahoma State University; Estados UnidosFil: Corsico, Alejandro Hugo. 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: Moss, Adam G.. Oklahoma State University; Estados UnidosFil: Jewett, Gracyn. Oklahoma State University; Estados UnidosFil: de Gerónimo, Francisco César. Pontificia Universidad Católica de Chile; Chile. 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: 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; ArgentinaWiley Blackwell Publishing, Inc2023-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/235610Kilic, Mukremin; Corsico, Alejandro Hugo; Moss, Adam G.; Jewett, Gracyn; de Gerónimo, Francisco César; et al.; WD J004917.14−252556.81: the most massive pulsating white dwarf; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 522; 2; 6-2023; 2181-21870035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stad1113info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/522/2/2181/7129018info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:06:14Zoai:ri.conicet.gov.ar:11336/235610instacron: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 12:06:14.776CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv WD J004917.14−252556.81: the most massive pulsating white dwarf
title WD J004917.14−252556.81: the most massive pulsating white dwarf
spellingShingle WD J004917.14−252556.81: the most massive pulsating white dwarf
Kilic, Mukremin
EVOLUTION-STARS
GENERAL-WHITE DWARFS
OSCILLATIONS-STARS
STARS
VARIABLES
title_short WD J004917.14−252556.81: the most massive pulsating white dwarf
title_full WD J004917.14−252556.81: the most massive pulsating white dwarf
title_fullStr WD J004917.14−252556.81: the most massive pulsating white dwarf
title_full_unstemmed WD J004917.14−252556.81: the most massive pulsating white dwarf
title_sort WD J004917.14−252556.81: the most massive pulsating white dwarf
dc.creator.none.fl_str_mv Kilic, Mukremin
Corsico, Alejandro Hugo
Moss, Adam G.
Jewett, Gracyn
de Gerónimo, Francisco César
Althaus, Leandro Gabriel
author Kilic, Mukremin
author_facet Kilic, Mukremin
Corsico, Alejandro Hugo
Moss, Adam G.
Jewett, Gracyn
de Gerónimo, Francisco César
Althaus, Leandro Gabriel
author_role author
author2 Corsico, Alejandro Hugo
Moss, Adam G.
Jewett, Gracyn
de Gerónimo, Francisco César
Althaus, Leandro Gabriel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv EVOLUTION-STARS
GENERAL-WHITE DWARFS
OSCILLATIONS-STARS
STARS
VARIABLES
topic EVOLUTION-STARS
GENERAL-WHITE DWARFS
OSCILLATIONS-STARS
STARS
VARIABLES
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 Apache Point Observatory (APO) and Gemini time-series photometry of WD J004917.14−252556.81, an ultramassive DA white dwarf with Teff = 13 020 K and log g = 9.34. We detect variability at two significant frequencies, making J0049−2525 the most massive pulsating white dwarf currently known with M★ = 1.31 M☉ (for a CO core) or 1.26 M☉ (for an ONe core). J0049−2525 does not display any of the signatures of binary mergers, there is no evidence of magnetism, large tangential velocity, or rapid rotation. Hence, it likely formed through single star evolution and is likely to have an ONe core. Evolutionary models indicate that its interior is ≳99 per cent crystallized. Asteroseismology offers an unprecedented opportunity to probe its interior structure. However, the relatively few pulsation modes detected limit our ability to obtain robust seismic solutions. Instead, we provide several representative solutions that could explain the observed properties of this star. Extensive follow-up time-series photometry of this unique target has the potential to discover a significant number of additional pulsation modes that would help overcome the degeneracies in the asteroseismic fits, and enable us to probe the interior of an ≈1.3 M☉ crystallized white dwarf.
Fil: Kilic, Mukremin. Oklahoma State University; Estados Unidos
Fil: Corsico, Alejandro Hugo. 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: Moss, Adam G.. Oklahoma State University; Estados Unidos
Fil: Jewett, Gracyn. Oklahoma State University; Estados Unidos
Fil: de Gerónimo, Francisco César. Pontificia Universidad Católica de Chile; Chile. 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: 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 We present Apache Point Observatory (APO) and Gemini time-series photometry of WD J004917.14−252556.81, an ultramassive DA white dwarf with Teff = 13 020 K and log g = 9.34. We detect variability at two significant frequencies, making J0049−2525 the most massive pulsating white dwarf currently known with M★ = 1.31 M☉ (for a CO core) or 1.26 M☉ (for an ONe core). J0049−2525 does not display any of the signatures of binary mergers, there is no evidence of magnetism, large tangential velocity, or rapid rotation. Hence, it likely formed through single star evolution and is likely to have an ONe core. Evolutionary models indicate that its interior is ≳99 per cent crystallized. Asteroseismology offers an unprecedented opportunity to probe its interior structure. However, the relatively few pulsation modes detected limit our ability to obtain robust seismic solutions. Instead, we provide several representative solutions that could explain the observed properties of this star. Extensive follow-up time-series photometry of this unique target has the potential to discover a significant number of additional pulsation modes that would help overcome the degeneracies in the asteroseismic fits, and enable us to probe the interior of an ≈1.3 M☉ crystallized white dwarf.
publishDate 2023
dc.date.none.fl_str_mv 2023-06
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/11336/235610
Kilic, Mukremin; Corsico, Alejandro Hugo; Moss, Adam G.; Jewett, Gracyn; de Gerónimo, Francisco César; et al.; WD J004917.14−252556.81: the most massive pulsating white dwarf; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 522; 2; 6-2023; 2181-2187
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/235610
identifier_str_mv Kilic, Mukremin; Corsico, Alejandro Hugo; Moss, Adam G.; Jewett, Gracyn; de Gerónimo, Francisco César; et al.; WD J004917.14−252556.81: the most massive pulsating white dwarf; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 522; 2; 6-2023; 2181-2187
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stad1113
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/522/2/2181/7129018
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 Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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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