Structure and evolution of ultra-massive white dwarfs in general relativity

[Context] Ultra-massive white dwarfs (M ABSTRACT 1.05 M) are of utmost importance in view of the role they play in type Ia supernovae explosions, merger events, the existence of high-magnetic-field white dwarfs, and the physical processes in the super asymptotic giant branch phase.

Detalles Bibliográficos
Autores: Althaus, Leandro G., Camisassa, María E., Torres, Santiago, Battich, Tiara, Córsico, Alejandro H., Rebassa-Mansergas, Alberto, Raddi, Roberto
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/295859
Acceso en línea:http://hdl.handle.net/10261/295859
Access Level:acceso abierto
Palabra clave:Stars: evolution
White dwarfs
Stars: interiors
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dc.title.none.fl_str_mv Structure and evolution of ultra-massive white dwarfs in general relativity
title Structure and evolution of ultra-massive white dwarfs in general relativity
spellingShingle Structure and evolution of ultra-massive white dwarfs in general relativity
Althaus, Leandro G.
Stars: evolution
White dwarfs
Stars: interiors
title_short Structure and evolution of ultra-massive white dwarfs in general relativity
title_full Structure and evolution of ultra-massive white dwarfs in general relativity
title_fullStr Structure and evolution of ultra-massive white dwarfs in general relativity
title_full_unstemmed Structure and evolution of ultra-massive white dwarfs in general relativity
title_sort Structure and evolution of ultra-massive white dwarfs in general relativity
dc.creator.none.fl_str_mv Althaus, Leandro G.
Camisassa, María E.
Torres, Santiago
Battich, Tiara
Córsico, Alejandro H.
Rebassa-Mansergas, Alberto
Raddi, Roberto
author Althaus, Leandro G.
author_facet Althaus, Leandro G.
Camisassa, María E.
Torres, Santiago
Battich, Tiara
Córsico, Alejandro H.
Rebassa-Mansergas, Alberto
Raddi, Roberto
author_role author
author2 Camisassa, María E.
Torres, Santiago
Battich, Tiara
Córsico, Alejandro H.
Rebassa-Mansergas, Alberto
Raddi, Roberto
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Agencia Nacional de Promoción Científica y Tecnológica (Argentina)
Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina)
Universidad Nacional de La Plata
Agencia Estatal de Investigación (España)
Ministerio de Ciencia, Innovación y Universidades (España)
European Research Council
European Commission
Generalitat de Catalunya
Ministerio de Economía y Competitividad (España)
dc.subject.none.fl_str_mv Stars: evolution
White dwarfs
Stars: interiors
topic Stars: evolution
White dwarfs
Stars: interiors
description [Context] Ultra-massive white dwarfs (M ABSTRACT 1.05 M) are of utmost importance in view of the role they play in type Ia supernovae explosions, merger events, the existence of high-magnetic-field white dwarfs, and the physical processes in the super asymptotic giant branch phase.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/295859
url http://hdl.handle.net/10261/295859
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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info:eu-repo/grantAgreement/MINECO//RYC-2016-20254
info:eu-repo/grantAgreement/EC/H2020/801370
Astronomy and Astrophysics
https://doi.org/10.1051/0004-6361/202244604
No
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling Structure and evolution of ultra-massive white dwarfs in general relativityAlthaus, Leandro G.Camisassa, María E.Torres, SantiagoBattich, TiaraCórsico, Alejandro H.Rebassa-Mansergas, AlbertoRaddi, RobertoStars: evolutionWhite dwarfsStars: interiors[Context] Ultra-massive white dwarfs (M ABSTRACT 1.05 M) are of utmost importance in view of the role they play in type Ia supernovae explosions, merger events, the existence of high-magnetic-field white dwarfs, and the physical processes in the super asymptotic giant branch phase.[Aims] We aim to present the first set of constant rest-mass ultra-massive oxygen-neon white dwarf cooling tracks with masses of M>1.29Mwhichfullytake into account the effects of general relativity on their structural and evolutionary properties.[Methods] We computed the full evolution sequences of 1.29, 1.31, 1.33, 1.35, and 1.369 Mwhite dwarfs with the La Plata stellar evolution code, LPCODE. For this work, the standard equations of stellar structure and evolution have been modified to include the effects of general relativity. Specifically, the fully general relativistic partial differential equations governing the evolution of a spherically symmetric star are solved in a way so that they resemble the standard Newtonian equations of stellar structure. For comparison purposes, the same sequences have been computed for the Newtonian case.[Results] According to our calculations, the evolutionary properties of the most massive white dwarfs are strongly modified by general relativity effects. In particular, the resulting stellar radius is markedly smaller in the general relativistic case, being up to 25% smaller than predicted by the Newtonian treatment for the more massive ones. We find that oxygen-neon white dwarfs more massive than 1.369 Mbecome gravitationally unstable with respect to general relativity effects. When core chemical distribution due to phase separation on crystallization is considered, such instability occurs at somewhat lower stellar masses, 1.36 M. In addition, cooling times for the most massive white dwarf sequences are about a factor of two smaller than in the Newtonian case at advanced stages of evolution. Finally, a sample of white dwarfs have been identified as ideal candidates to test these general relativistic effects.[Conclusions] We conclude that the general relativity effects should be taken into account for an accurate assessment of the structural and evolutionary properties of the most massive white dwarfs. These new ultra-massive white dwarf models constitute a considerable improvement over those computed in the framework of the standard Newtonian theory of stellar interiors.Part of this work was supported by PICT-2017-0884 from ANPCyT, PIP 112-20080100940 grant from CONICET, grant G149 from University of La Plata, NASA grants 80NSSC17K0008 and 80NSSC20K0193. S.T. and A.R.M. acknowledge support from MINECO under the PID2020-117252GB-I00 grant. A.R.M. acknowledges support from Grant RYC-2016-20254 funded by MCIN/AEI/10.13039/501100011033 and by ESF Investing in your future. R.R. has received funding from the postdoctoral fellowship program Beatriu de Pinós, funded by the Secretary of Universities and Research (Government of Catalonia) and by the Horizon 2020 programme of research and innovation of the European Union under the Maria Skłodowska-Curie grant agreement No. 801370.Peer reviewedEDP SciencesAgencia Nacional de Promoción Científica y Tecnológica (Argentina)Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina)Universidad Nacional de La PlataAgencia Estatal de Investigación (España)Ministerio de Ciencia, Innovación y Universidades (España)European Research CouncilEuropean CommissionGeneralitat de CatalunyaMinisterio de Economía y Competitividad (España)202320232022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/295859reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117252GB-I00info:eu-repo/grantAgreement/MINECO//RYC-2016-20254info:eu-repo/grantAgreement/EC/H2020/801370Astronomy and Astrophysicshttps://doi.org/10.1051/0004-6361/202244604Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2958592026-05-22T06:33:51Z
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