Discovery of the Richest Pulsating Ultramassive White Dwarf
The discovery of pulsations in ultramassive (UM) white dwarfs (WDs) can help to probe their interiors and unveil their core composition and crystallized mass fraction through asteroseismic techniques. To date, the richest pulsating UM WD known is BPM 37093 with 8 modes detected, for which detailed a...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/385346 |
| Acceso en línea: | http://hdl.handle.net/10261/385346 https://api.elsevier.com/content/abstract/scopus_id/85217234264 |
| Access Level: | acceso abierto |
| Palabra clave: | White dwarf stars Stellar oscillations ZZ Ceti stars |
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Discovery of the Richest Pulsating Ultramassive White DwarfDe Gerónimo, Francisco CésarUzundag, MuratRebassa-Mansergas, AlbertoBrown, A.Kilic, MukreminCórsico, Alejandro H.Jewett, Gracyn C.Moss, Adam G.White dwarf starsStellar oscillationsZZ Ceti starsThe discovery of pulsations in ultramassive (UM) white dwarfs (WDs) can help to probe their interiors and unveil their core composition and crystallized mass fraction through asteroseismic techniques. To date, the richest pulsating UM WD known is BPM 37093 with 8 modes detected, for which detailed asteroseismic analysis has been performed in the past. In this work, we report the discovery of 19 pulsation modes in the UM WD star WD J0135+5722, making it the richest pulsating hydrogen-atmosphere UM WD known to date. This object exhibits multiperiodic luminosity variations with periods ranging from 137 to 1345 s, typical of pulsating WDs in the ZZ Ceti instability strip, which is centered at Teff ∼ 12,000 K. We estimate the stellar mass of WD J0135+5722 by different methods, resulting in M⋆ ∼ 1.12-1.14 M⊙ if the star’s core is made of oxygen and neon or M⋆ ∼ 1.14-1.15 M⊙ if the star hosts a carbon oxygen core. Future analysis of the star periods could shed light on the core chemical composition through asteroseismology.Based on observations made with the Gran Telescopio Canarias (Prog. ID: GTC19-24B), installed at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofìsica de Canarias on the island of La Palma. This work was supported by PIP 112-200801-00940 grant from CONICET, grant G149 from the University of La Plata, PIP-2971 from CONICET (Argentina), and PICT 2020-03316 from Agencia I+D+i (Argentina). M.U. gratefully acknowledges funding from the Research Foundation Flanders (FWO) by means of a junior postdoctoral fellowship (grant agreement No. 1247624N). This work was partially supported by the MINECO grant PID2023-148661NB-I00 and by the AGAUR/Generalitat de Catalunya grant SGR-386/2021. This work is supported in part by the NSF under grant AST-2205736 and NASA under grants 80NSSC22K0479, 80NSSC24K0380, and 80NSSC24K0436. The Apache Point Observatory 3.5 m telescope is owned and operated by the Astrophysical Research Consortium.Peer reviewedIOP PublishingAmerican Astronomical SocietyConsejo Nacional de Investigaciones Científicas y Técnicas (Argentina)Universidad Nacional de La PlataResearch Foundation - FlandersMinisterio de Economía y Competitividad (España)Generalitat de CatalunyaNASAUzundag, Murat [0000-0002-6603-994X]Rebassa-Mansergas, Alberto [0000-0002-6153-7173]Brown, A. [0000-0002-3316-7240]Kilic, Mukremin [0000-0001-6098-2235]Córsico, Alejandro H. [0000-0002-0006-9900]Jewett, Gracyn C. [0009-0009-9105-7865]Moss, Adam G. [0000-0001-7143-0890]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/385346https://api.elsevier.com/content/abstract/scopus_id/85217234264reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-148661NB-I00https://doi.org/10.3847/2041-8213/adad73Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3853462026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Discovery of the Richest Pulsating Ultramassive White Dwarf |
| title |
Discovery of the Richest Pulsating Ultramassive White Dwarf |
| spellingShingle |
Discovery of the Richest Pulsating Ultramassive White Dwarf De Gerónimo, Francisco César White dwarf stars Stellar oscillations ZZ Ceti stars |
| title_short |
Discovery of the Richest Pulsating Ultramassive White Dwarf |
| title_full |
Discovery of the Richest Pulsating Ultramassive White Dwarf |
| title_fullStr |
Discovery of the Richest Pulsating Ultramassive White Dwarf |
| title_full_unstemmed |
Discovery of the Richest Pulsating Ultramassive White Dwarf |
| title_sort |
Discovery of the Richest Pulsating Ultramassive White Dwarf |
| dc.creator.none.fl_str_mv |
De Gerónimo, Francisco César Uzundag, Murat Rebassa-Mansergas, Alberto Brown, A. Kilic, Mukremin Córsico, Alejandro H. Jewett, Gracyn C. Moss, Adam G. |
| author |
De Gerónimo, Francisco César |
| author_facet |
De Gerónimo, Francisco César Uzundag, Murat Rebassa-Mansergas, Alberto Brown, A. Kilic, Mukremin Córsico, Alejandro H. Jewett, Gracyn C. Moss, Adam G. |
| author_role |
author |
| author2 |
Uzundag, Murat Rebassa-Mansergas, Alberto Brown, A. Kilic, Mukremin Córsico, Alejandro H. Jewett, Gracyn C. Moss, Adam G. |
| author2_role |
author author author author author author author |
| dc.contributor.none.fl_str_mv |
Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina) Universidad Nacional de La Plata Research Foundation - Flanders Ministerio de Economía y Competitividad (España) Generalitat de Catalunya NASA Uzundag, Murat [0000-0002-6603-994X] Rebassa-Mansergas, Alberto [0000-0002-6153-7173] Brown, A. [0000-0002-3316-7240] Kilic, Mukremin [0000-0001-6098-2235] Córsico, Alejandro H. [0000-0002-0006-9900] Jewett, Gracyn C. [0009-0009-9105-7865] Moss, Adam G. [0000-0001-7143-0890] Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
White dwarf stars Stellar oscillations ZZ Ceti stars |
| topic |
White dwarf stars Stellar oscillations ZZ Ceti stars |
| description |
The discovery of pulsations in ultramassive (UM) white dwarfs (WDs) can help to probe their interiors and unveil their core composition and crystallized mass fraction through asteroseismic techniques. To date, the richest pulsating UM WD known is BPM 37093 with 8 modes detected, for which detailed asteroseismic analysis has been performed in the past. In this work, we report the discovery of 19 pulsation modes in the UM WD star WD J0135+5722, making it the richest pulsating hydrogen-atmosphere UM WD known to date. This object exhibits multiperiodic luminosity variations with periods ranging from 137 to 1345 s, typical of pulsating WDs in the ZZ Ceti instability strip, which is centered at Teff ∼ 12,000 K. We estimate the stellar mass of WD J0135+5722 by different methods, resulting in M⋆ ∼ 1.12-1.14 M⊙ if the star’s core is made of oxygen and neon or M⋆ ∼ 1.14-1.15 M⊙ if the star hosts a carbon oxygen core. Future analysis of the star periods could shed light on the core chemical composition through asteroseismology. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025 2025 2025 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://hdl.handle.net/10261/385346 https://api.elsevier.com/content/abstract/scopus_id/85217234264 |
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http://hdl.handle.net/10261/385346 https://api.elsevier.com/content/abstract/scopus_id/85217234264 |
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Inglés |
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Inglés |
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#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-148661NB-I00 https://doi.org/10.3847/2041-8213/adad73 Sí |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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IOP Publishing American Astronomical Society |
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IOP Publishing American Astronomical Society |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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