Limits on planets around pulsating white dwarf stars

Detalhes bibliográficos
Autor(a) principal: Mullally, Fergal
Data de Publicação: 2008
Outros Autores: Winget, Donald Earl, DeGennaro, Steven, Jeffery, Elizabeth, Thompson, S. E., Chandler, Dean W., Kepler, Souza Oliveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/108964
Resumo: We present limits on planetary companions to pulsating white dwarf stars. A subset of these stars exhibit extreme stability in the period and phase of some of their pulsation modes; a planet can be detected around such a star by searching for periodic variations in the arrival time of these pulsations. We present limits on companions greater than a few Jupiter masses around a sample of 15 white dwarf stars as part of an ongoing survey. One star shows a variation in arrival time consistent with a 2MJ planet in a 4.5 yr orbit.We discuss other possible explanations for the observed signal and conclude that a planet is the most plausible explanation based on the data available.
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spelling Mullally, FergalWinget, Donald EarlDeGennaro, StevenJeffery, ElizabethThompson, S. E.Chandler, Dean W.Kepler, Souza Oliveira2015-01-15T02:15:06Z20080004-637Xhttp://hdl.handle.net/10183/108964000634350We present limits on planetary companions to pulsating white dwarf stars. A subset of these stars exhibit extreme stability in the period and phase of some of their pulsation modes; a planet can be detected around such a star by searching for periodic variations in the arrival time of these pulsations. We present limits on companions greater than a few Jupiter masses around a sample of 15 white dwarf stars as part of an ongoing survey. One star shows a variation in arrival time consistent with a 2MJ planet in a 4.5 yr orbit.We discuss other possible explanations for the observed signal and conclude that a planet is the most plausible explanation based on the data available.application/pdfengThe astrophysical journal. Chicago. Vol. 676, no. 1 (Mar. 2008), p. 573-583Pulsacoes estelaresAnãs brancasPlanetary systemsWhite dwarfsLimits on planets around pulsating white dwarf starsEstrangeiroinfo: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:UFRGSORIGINAL000634350.pdf000634350.pdfTexto completo (inglês)application/pdf819134http://www.lume.ufrgs.br/bitstream/10183/108964/1/000634350.pdf88516759a65a4885783d412e604d0216MD51TEXT000634350.pdf.txt000634350.pdf.txtExtracted Texttext/plain33409http://www.lume.ufrgs.br/bitstream/10183/108964/2/000634350.pdf.txt21c279a9cb3794f78b459e4cf4c2b1adMD52THUMBNAIL000634350.pdf.jpg000634350.pdf.jpgGenerated Thumbnailimage/jpeg1892http://www.lume.ufrgs.br/bitstream/10183/108964/3/000634350.pdf.jpg5d6c39a12eea291290d14e2d8ddb59a4MD5310183/1089642018-10-23 08:40:00.525oai:www.lume.ufrgs.br:10183/108964Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-23T11:40Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Limits on planets around pulsating white dwarf stars
title Limits on planets around pulsating white dwarf stars
spellingShingle Limits on planets around pulsating white dwarf stars
Mullally, Fergal
Pulsacoes estelares
Anãs brancas
Planetary systems
White dwarfs
title_short Limits on planets around pulsating white dwarf stars
title_full Limits on planets around pulsating white dwarf stars
title_fullStr Limits on planets around pulsating white dwarf stars
title_full_unstemmed Limits on planets around pulsating white dwarf stars
title_sort Limits on planets around pulsating white dwarf stars
author Mullally, Fergal
author_facet Mullally, Fergal
Winget, Donald Earl
DeGennaro, Steven
Jeffery, Elizabeth
Thompson, S. E.
Chandler, Dean W.
Kepler, Souza Oliveira
author_role author
author2 Winget, Donald Earl
DeGennaro, Steven
Jeffery, Elizabeth
Thompson, S. E.
Chandler, Dean W.
Kepler, Souza Oliveira
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Mullally, Fergal
Winget, Donald Earl
DeGennaro, Steven
Jeffery, Elizabeth
Thompson, S. E.
Chandler, Dean W.
Kepler, Souza Oliveira
dc.subject.por.fl_str_mv Pulsacoes estelares
Anãs brancas
topic Pulsacoes estelares
Anãs brancas
Planetary systems
White dwarfs
dc.subject.eng.fl_str_mv Planetary systems
White dwarfs
description We present limits on planetary companions to pulsating white dwarf stars. A subset of these stars exhibit extreme stability in the period and phase of some of their pulsation modes; a planet can be detected around such a star by searching for periodic variations in the arrival time of these pulsations. We present limits on companions greater than a few Jupiter masses around a sample of 15 white dwarf stars as part of an ongoing survey. One star shows a variation in arrival time consistent with a 2MJ planet in a 4.5 yr orbit.We discuss other possible explanations for the observed signal and conclude that a planet is the most plausible explanation based on the data available.
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2015-01-15T02:15:06Z
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/108964
dc.identifier.issn.pt_BR.fl_str_mv 0004-637X
dc.identifier.nrb.pt_BR.fl_str_mv 000634350
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url http://hdl.handle.net/10183/108964
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv The astrophysical journal. Chicago. Vol. 676, no. 1 (Mar. 2008), p. 573-583
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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