Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known

Detalhes bibliográficos
Autor(a) principal: Kepler, Souza Oliveira
Data de Publicação: 2000
Outros Autores: Mukadam, Anjum Shagufta, Winget, Donald Earl, Nather, R. Edward, Metcalfe, Travis S., Reed, M. D., Kawaler, Steven D., Bradley, Paul A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/108887
Resumo: We observe G117-B15A, the most precise optical clock known, to measure the rate of change of the main pulsation period of this blue-edge DAV white dwarf. Even though the obtained value is only within 1 σ, P = (2.3±1.4) x 10 -15 s s-ˡ, it is already constraining the evolutionary timescale of this cooling white dwarf star.
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spelling Kepler, Souza OliveiraMukadam, Anjum ShaguftaWinget, Donald EarlNather, R. EdwardMetcalfe, Travis S.Reed, M. D.Kawaler, Steven D.Bradley, Paul A.2015-01-13T02:14:41Z20000004-637Xhttp://hdl.handle.net/10183/108887000274870We observe G117-B15A, the most precise optical clock known, to measure the rate of change of the main pulsation period of this blue-edge DAV white dwarf. Even though the obtained value is only within 1 σ, P = (2.3±1.4) x 10 -15 s s-ˡ, it is already constraining the evolutionary timescale of this cooling white dwarf star.application/pdfengThe astrophysical journal. Chicago. Vol. 534, no. 2 pt. 2 (May 2000), p. L185-L188Evolucao estelarPulsacoes estelaresAnãs brancasEstrelas variaveisStars: evolutionStars: individual (G117-B15A)Stars: oscillationsEvolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock knownEstrangeiroinfo: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:UFRGSORIGINAL000274870.pdf000274870.pdfTexto completo (inglês)application/pdf52957http://www.lume.ufrgs.br/bitstream/10183/108887/1/000274870.pdf2246158ede9e6548ffc13b908cefa401MD51TEXT000274870.pdf.txt000274870.pdf.txtExtracted Texttext/plain18085http://www.lume.ufrgs.br/bitstream/10183/108887/2/000274870.pdf.txt6cd741c6343b86d50479d4a4b6e098e8MD52THUMBNAIL000274870.pdf.jpg000274870.pdf.jpgGenerated Thumbnailimage/jpeg1986http://www.lume.ufrgs.br/bitstream/10183/108887/3/000274870.pdf.jpgb950b51ae1e93ed628455388492fd93bMD5310183/1088872018-10-23 08:37:32.918oai:www.lume.ufrgs.br:10183/108887Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-23T11:37:32Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known
title Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known
spellingShingle Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known
Kepler, Souza Oliveira
Evolucao estelar
Pulsacoes estelares
Anãs brancas
Estrelas variaveis
Stars: evolution
Stars: individual (G117-B15A)
Stars: oscillations
title_short Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known
title_full Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known
title_fullStr Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known
title_full_unstemmed Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known
title_sort Evolutionary timescale of the pulsating white dwarf G117-B15A : the most stable optical clock known
author Kepler, Souza Oliveira
author_facet Kepler, Souza Oliveira
Mukadam, Anjum Shagufta
Winget, Donald Earl
Nather, R. Edward
Metcalfe, Travis S.
Reed, M. D.
Kawaler, Steven D.
Bradley, Paul A.
author_role author
author2 Mukadam, Anjum Shagufta
Winget, Donald Earl
Nather, R. Edward
Metcalfe, Travis S.
Reed, M. D.
Kawaler, Steven D.
Bradley, Paul A.
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Kepler, Souza Oliveira
Mukadam, Anjum Shagufta
Winget, Donald Earl
Nather, R. Edward
Metcalfe, Travis S.
Reed, M. D.
Kawaler, Steven D.
Bradley, Paul A.
dc.subject.por.fl_str_mv Evolucao estelar
Pulsacoes estelares
Anãs brancas
Estrelas variaveis
topic Evolucao estelar
Pulsacoes estelares
Anãs brancas
Estrelas variaveis
Stars: evolution
Stars: individual (G117-B15A)
Stars: oscillations
dc.subject.eng.fl_str_mv Stars: evolution
Stars: individual (G117-B15A)
Stars: oscillations
description We observe G117-B15A, the most precise optical clock known, to measure the rate of change of the main pulsation period of this blue-edge DAV white dwarf. Even though the obtained value is only within 1 σ, P = (2.3±1.4) x 10 -15 s s-ˡ, it is already constraining the evolutionary timescale of this cooling white dwarf star.
publishDate 2000
dc.date.issued.fl_str_mv 2000
dc.date.accessioned.fl_str_mv 2015-01-13T02:14:41Z
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/10183/108887
dc.identifier.issn.pt_BR.fl_str_mv 0004-637X
dc.identifier.nrb.pt_BR.fl_str_mv 000274870
identifier_str_mv 0004-637X
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url http://hdl.handle.net/10183/108887
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv The astrophysical journal. Chicago. Vol. 534, no. 2 pt. 2 (May 2000), p. L185-L188
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instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
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reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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