New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA

Detalhes bibliográficos
Autor(a) principal: Ramos, Gabriel Lauffer
Data de Publicação: 2018
Outros Autores: Romero, Alejandra Daniela, Kepler, Souza Oliveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/194256
Resumo: We explore the evolution of hydrogen-rich and hydrogen-deficient white dwarf stars with masses between 1.012 and 1.307M , and initial metallicity of Z = 0.02. These sequences are the result ofmain-sequence stars with masses between 8.8 and 11.8M . The simulations were performed with MESA (Modules for Experiments in Stellar Astrophysics), starting at the zeroage main sequence, through thermally pulsing and mass-loss phases, ending at the white dwarf cooling sequence. We present reliable chemical profiles for the whole mass range considered, covering the different expected central compositions (i.e. C/O, O/Ne and Ne/O/Mg) and its dependence on the stellar mass. In addition, we present detailed chemical profiles of hybrid C/O–O/Ne corewhite dwarfs, found in themass range between 1.024 and 1.15M .We present the initial-to-final mass relation, the mass–radius relation and cooling times considering the effects of atmosphere and core composition.
id UFRGS-2_13628b3fb0bece72938aa81a963a6f86
oai_identifier_str oai:www.lume.ufrgs.br:10183/194256
network_acronym_str UFRGS-2
network_name_str Repositório Institucional da UFRGS
repository_id_str
spelling Ramos, Gabriel LaufferRomero, Alejandra DanielaKepler, Souza Oliveira2019-05-15T02:37:59Z20180035-8711http://hdl.handle.net/10183/194256001086147We explore the evolution of hydrogen-rich and hydrogen-deficient white dwarf stars with masses between 1.012 and 1.307M , and initial metallicity of Z = 0.02. These sequences are the result ofmain-sequence stars with masses between 8.8 and 11.8M . The simulations were performed with MESA (Modules for Experiments in Stellar Astrophysics), starting at the zeroage main sequence, through thermally pulsing and mass-loss phases, ending at the white dwarf cooling sequence. We present reliable chemical profiles for the whole mass range considered, covering the different expected central compositions (i.e. C/O, O/Ne and Ne/O/Mg) and its dependence on the stellar mass. In addition, we present detailed chemical profiles of hybrid C/O–O/Ne corewhite dwarfs, found in themass range between 1.024 and 1.15M .We present the initial-to-final mass relation, the mass–radius relation and cooling times considering the effects of atmosphere and core composition.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 480, no. 2 (Oct. 2018), p. 1547-1562Evolucao estelarHidrogênioAnãs brancasSimulação numéricaMethods: numericalStars: evolutionStars: white dwarfsNew full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESAEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001086147.pdf.txt001086147.pdf.txtExtracted Texttext/plain70473http://www.lume.ufrgs.br/bitstream/10183/194256/2/001086147.pdf.txtaab1da8a8e9536b3b8f93384297fc0d7MD52ORIGINAL001086147.pdfTexto completo (inglês)application/pdf2395177http://www.lume.ufrgs.br/bitstream/10183/194256/1/001086147.pdfa4bef7a124d740de321b399b40e8daffMD5110183/1942562023-05-14 03:24:45.366526oai:www.lume.ufrgs.br:10183/194256Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-05-14T06:24:45Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA
title New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA
spellingShingle New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA
Ramos, Gabriel Lauffer
Evolucao estelar
Hidrogênio
Anãs brancas
Simulação numérica
Methods: numerical
Stars: evolution
Stars: white dwarfs
title_short New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA
title_full New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA
title_fullStr New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA
title_full_unstemmed New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA
title_sort New full evolutionary sequences of H- and He-atmosphere massive white dwarf stars using MESA
author Ramos, Gabriel Lauffer
author_facet Ramos, Gabriel Lauffer
Romero, Alejandra Daniela
Kepler, Souza Oliveira
author_role author
author2 Romero, Alejandra Daniela
Kepler, Souza Oliveira
author2_role author
author
dc.contributor.author.fl_str_mv Ramos, Gabriel Lauffer
Romero, Alejandra Daniela
Kepler, Souza Oliveira
dc.subject.por.fl_str_mv Evolucao estelar
Hidrogênio
Anãs brancas
Simulação numérica
topic Evolucao estelar
Hidrogênio
Anãs brancas
Simulação numérica
Methods: numerical
Stars: evolution
Stars: white dwarfs
dc.subject.eng.fl_str_mv Methods: numerical
Stars: evolution
Stars: white dwarfs
description We explore the evolution of hydrogen-rich and hydrogen-deficient white dwarf stars with masses between 1.012 and 1.307M , and initial metallicity of Z = 0.02. These sequences are the result ofmain-sequence stars with masses between 8.8 and 11.8M . The simulations were performed with MESA (Modules for Experiments in Stellar Astrophysics), starting at the zeroage main sequence, through thermally pulsing and mass-loss phases, ending at the white dwarf cooling sequence. We present reliable chemical profiles for the whole mass range considered, covering the different expected central compositions (i.e. C/O, O/Ne and Ne/O/Mg) and its dependence on the stellar mass. In addition, we present detailed chemical profiles of hybrid C/O–O/Ne corewhite dwarfs, found in themass range between 1.024 and 1.15M .We present the initial-to-final mass relation, the mass–radius relation and cooling times considering the effects of atmosphere and core composition.
publishDate 2018
dc.date.issued.fl_str_mv 2018
dc.date.accessioned.fl_str_mv 2019-05-15T02:37:59Z
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/194256
dc.identifier.issn.pt_BR.fl_str_mv 0035-8711
dc.identifier.nrb.pt_BR.fl_str_mv 001086147
identifier_str_mv 0035-8711
001086147
url http://hdl.handle.net/10183/194256
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Monthly notices of the royal astronomical society. Oxford. Vol. 480, no. 2 (Oct. 2018), p. 1547-1562
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
bitstream.url.fl_str_mv http://www.lume.ufrgs.br/bitstream/10183/194256/2/001086147.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/194256/1/001086147.pdf
bitstream.checksum.fl_str_mv aab1da8a8e9536b3b8f93384297fc0d7
a4bef7a124d740de321b399b40e8daff
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
repository.name.fl_str_mv Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)
repository.mail.fl_str_mv
_version_ 1798487401197207552

Registros relacionados