Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant

Autores
Uzundag, Murat; Kilic, Mukremin; de Gerónimo, Francisco César; Corsico, Alejandro Hugo; Jewett, Gracyn; Moss, Adam; Rebassa Mansergas, Alberto; Brown, Alex J.; Camisassa, María Eugenia; Bergeron, Pierre
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
2MASS J05513444+4135297 (hereafter J0551+4135) is the only pulsating DAQ white dwarf (WD) known with a carbon and hydrogen atmosphere. Its unusual atmospheric composition and kinematics indicate a WD merger origin. We present time-series photometry of J0551+4135 obtained using the Apache Point Observatory 3.5 m, Gemini North 8 m, and Gran Telescopio Canarias 10 m telescopes. J0551+4135 exhibits variations in pulsation amplitude and frequency over time. We detect 10 significant recurring peaks across different subsets of observations, with frequencies ranging from 987 to 1180 μHz, consistent with nonradial gravity (g)-mode oscillations. We present new evolutionary models suitable for spectroscopic characterization of DAQ WDs, and derive a mass of 1.13 ± 0.01 M⊙and a cooling age of 1.7 ± 0.1 Gyr for a CO core, and 1.12 ± 0.01 M⊙and 1.6 ± 0.1 Gyr for an ONe-core WD, respectively. However, detailed asteroseismology of this unique pulsator has to wait until fully consistent DAQ evolutionary models are available. Further observations, including multisite campaigns to reduce daily aliasing and to improve the signal-to-noise ratio, would be helpful for the identification of additional modes and constraining the internal structure of this unique pulsator.
Fil: Uzundag, Murat. Institute Of Astronomy; Bélgica
Fil: Kilic, Mukremin. Oklahoma State University; Estados Unidos
Fil: de Gerónimo, Francisco César. 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: 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: Jewett, Gracyn. Oklahoma State University; Estados Unidos
Fil: Moss, Adam. University of Florida; Estados Unidos
Fil: Rebassa Mansergas, Alberto. Universidad Politécnica de Catalunya; España
Fil: Brown, Alex J.. Universitat Hamburg; Alemania
Fil: Camisassa, María Eugenia. Universidad Politécnica de Catalunya; España. 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: Bergeron, Pierre. University of Montreal; Canadá
Materia
WHITE DWARFS STARS
STELLAR OSCILLATIONS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/290792
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/290792
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger RemnantUzundag, MuratKilic, Mukreminde Gerónimo, Francisco CésarCorsico, Alejandro HugoJewett, GracynMoss, AdamRebassa Mansergas, AlbertoBrown, Alex J.Camisassa, María EugeniaBergeron, PierreWHITE DWARFS STARSSTELLAR OSCILLATIONShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/12MASS J05513444+4135297 (hereafter J0551+4135) is the only pulsating DAQ white dwarf (WD) known with a carbon and hydrogen atmosphere. Its unusual atmospheric composition and kinematics indicate a WD merger origin. We present time-series photometry of J0551+4135 obtained using the Apache Point Observatory 3.5 m, Gemini North 8 m, and Gran Telescopio Canarias 10 m telescopes. J0551+4135 exhibits variations in pulsation amplitude and frequency over time. We detect 10 significant recurring peaks across different subsets of observations, with frequencies ranging from 987 to 1180 μHz, consistent with nonradial gravity (g)-mode oscillations. We present new evolutionary models suitable for spectroscopic characterization of DAQ WDs, and derive a mass of 1.13 ± 0.01 M⊙and a cooling age of 1.7 ± 0.1 Gyr for a CO core, and 1.12 ± 0.01 M⊙and 1.6 ± 0.1 Gyr for an ONe-core WD, respectively. However, detailed asteroseismology of this unique pulsator has to wait until fully consistent DAQ evolutionary models are available. Further observations, including multisite campaigns to reduce daily aliasing and to improve the signal-to-noise ratio, would be helpful for the identification of additional modes and constraining the internal structure of this unique pulsator.Fil: Uzundag, Murat. Institute Of Astronomy; BélgicaFil: Kilic, Mukremin. Oklahoma State University; Estados UnidosFil: de Gerónimo, Francisco César. 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: 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: Jewett, Gracyn. Oklahoma State University; Estados UnidosFil: Moss, Adam. University of Florida; Estados UnidosFil: Rebassa Mansergas, Alberto. Universidad Politécnica de Catalunya; EspañaFil: Brown, Alex J.. Universitat Hamburg; AlemaniaFil: Camisassa, María Eugenia. Universidad Politécnica de Catalunya; España. 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: Bergeron, Pierre. University of Montreal; CanadáIOP Publishing2025-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/290792Uzundag, Murat; Kilic, Mukremin; de Gerónimo, Francisco César; Corsico, Alejandro Hugo; Jewett, Gracyn; et al.; Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant; IOP Publishing; Astrophysical Journal; 995; 1; 12-2025; 1-130004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ae1ef9info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ae1ef9info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T15:27:41Zoai:ri.conicet.gov.ar:11336/290792instacron: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:34982026-08-25 15:27:41.783CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant
title Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant
spellingShingle Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant
Uzundag, Murat
WHITE DWARFS STARS
STELLAR OSCILLATIONS
title_short Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant
title_full Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant
title_fullStr Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant
title_full_unstemmed Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant
title_sort Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant
dc.creator.none.fl_str_mv Uzundag, Murat
Kilic, Mukremin
de Gerónimo, Francisco César
Corsico, Alejandro Hugo
Jewett, Gracyn
Moss, Adam
Rebassa Mansergas, Alberto
Brown, Alex J.
Camisassa, María Eugenia
Bergeron, Pierre
author Uzundag, Murat
author_facet Uzundag, Murat
Kilic, Mukremin
de Gerónimo, Francisco César
Corsico, Alejandro Hugo
Jewett, Gracyn
Moss, Adam
Rebassa Mansergas, Alberto
Brown, Alex J.
Camisassa, María Eugenia
Bergeron, Pierre
author_role author
author2 Kilic, Mukremin
de Gerónimo, Francisco César
Corsico, Alejandro Hugo
Jewett, Gracyn
Moss, Adam
Rebassa Mansergas, Alberto
Brown, Alex J.
Camisassa, María Eugenia
Bergeron, Pierre
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv WHITE DWARFS STARS
STELLAR OSCILLATIONS
topic WHITE DWARFS STARS
STELLAR 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 2MASS J05513444+4135297 (hereafter J0551+4135) is the only pulsating DAQ white dwarf (WD) known with a carbon and hydrogen atmosphere. Its unusual atmospheric composition and kinematics indicate a WD merger origin. We present time-series photometry of J0551+4135 obtained using the Apache Point Observatory 3.5 m, Gemini North 8 m, and Gran Telescopio Canarias 10 m telescopes. J0551+4135 exhibits variations in pulsation amplitude and frequency over time. We detect 10 significant recurring peaks across different subsets of observations, with frequencies ranging from 987 to 1180 μHz, consistent with nonradial gravity (g)-mode oscillations. We present new evolutionary models suitable for spectroscopic characterization of DAQ WDs, and derive a mass of 1.13 ± 0.01 M⊙and a cooling age of 1.7 ± 0.1 Gyr for a CO core, and 1.12 ± 0.01 M⊙and 1.6 ± 0.1 Gyr for an ONe-core WD, respectively. However, detailed asteroseismology of this unique pulsator has to wait until fully consistent DAQ evolutionary models are available. Further observations, including multisite campaigns to reduce daily aliasing and to improve the signal-to-noise ratio, would be helpful for the identification of additional modes and constraining the internal structure of this unique pulsator.
Fil: Uzundag, Murat. Institute Of Astronomy; Bélgica
Fil: Kilic, Mukremin. Oklahoma State University; Estados Unidos
Fil: de Gerónimo, Francisco César. 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: 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: Jewett, Gracyn. Oklahoma State University; Estados Unidos
Fil: Moss, Adam. University of Florida; Estados Unidos
Fil: Rebassa Mansergas, Alberto. Universidad Politécnica de Catalunya; España
Fil: Brown, Alex J.. Universitat Hamburg; Alemania
Fil: Camisassa, María Eugenia. Universidad Politécnica de Catalunya; España. 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: Bergeron, Pierre. University of Montreal; Canadá
description 2MASS J05513444+4135297 (hereafter J0551+4135) is the only pulsating DAQ white dwarf (WD) known with a carbon and hydrogen atmosphere. Its unusual atmospheric composition and kinematics indicate a WD merger origin. We present time-series photometry of J0551+4135 obtained using the Apache Point Observatory 3.5 m, Gemini North 8 m, and Gran Telescopio Canarias 10 m telescopes. J0551+4135 exhibits variations in pulsation amplitude and frequency over time. We detect 10 significant recurring peaks across different subsets of observations, with frequencies ranging from 987 to 1180 μHz, consistent with nonradial gravity (g)-mode oscillations. We present new evolutionary models suitable for spectroscopic characterization of DAQ WDs, and derive a mass of 1.13 ± 0.01 M⊙and a cooling age of 1.7 ± 0.1 Gyr for a CO core, and 1.12 ± 0.01 M⊙and 1.6 ± 0.1 Gyr for an ONe-core WD, respectively. However, detailed asteroseismology of this unique pulsator has to wait until fully consistent DAQ evolutionary models are available. Further observations, including multisite campaigns to reduce daily aliasing and to improve the signal-to-noise ratio, would be helpful for the identification of additional modes and constraining the internal structure of this unique pulsator.
publishDate 2025
dc.date.none.fl_str_mv 2025-12
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/11336/290792
Uzundag, Murat; Kilic, Mukremin; de Gerónimo, Francisco César; Corsico, Alejandro Hugo; Jewett, Gracyn; et al.; Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant; IOP Publishing; Astrophysical Journal; 995; 1; 12-2025; 1-13
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/290792
identifier_str_mv Uzundag, Murat; Kilic, Mukremin; de Gerónimo, Francisco César; Corsico, Alejandro Hugo; Jewett, Gracyn; et al.; Multiperiodic Pulsations of the Unique DAQ White Dwarf J0551+4135: Insights into a Merger Remnant; IOP Publishing; Astrophysical Journal; 995; 1; 12-2025; 1-13
0004-637X
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://iopscience.iop.org/article/10.3847/1538-4357/ae1ef9
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ae1ef9
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 13.265058

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