New developments of the ZZ Ceti instability strip : the discovery of 11 new variables

Detalhes bibliográficos
Autor(a) principal: Castanheira, Bárbara Garcia
Data de Publicação: 2010
Outros Autores: Kepler, Souza Oliveira, Kleinman, Scot James, Nitta, Atsuko, Fraga, Luciano
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/90463
Resumo: Using the The SOuthern Astrophysical Research (SOAR) 4.1-m telescope, we report on the discovery of low amplitude pulsations for three stars previously reported as not-observed-tovary (NOV) by Mukadam et al. and Mullally et al., which are inside the ZZ Ceti instability strip. With the two pulsators discovered by Castanheira et al., we have now found variability in a total of five stars previously reported as NOVs.We also report the variability of eight new pulsating stars, not previously observed, bringing the total number of known ZZ Ceti stars to 148. In addition, we lowered the detection limit for 10 NOVs located near the edges of the ZZ Ceti instability strip. Our results are consistent with a pure mass-dependent ZZ Ceti instability strip.
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spelling Castanheira, Bárbara GarciaKepler, Souza OliveiraKleinman, Scot JamesNitta, AtsukoFraga, Luciano2014-04-08T01:50:03Z20100035-8711http://hdl.handle.net/10183/90463000750151Using the The SOuthern Astrophysical Research (SOAR) 4.1-m telescope, we report on the discovery of low amplitude pulsations for three stars previously reported as not-observed-tovary (NOV) by Mukadam et al. and Mullally et al., which are inside the ZZ Ceti instability strip. With the two pulsators discovered by Castanheira et al., we have now found variability in a total of five stars previously reported as NOVs.We also report the variability of eight new pulsating stars, not previously observed, bringing the total number of known ZZ Ceti stars to 148. In addition, we lowered the detection limit for 10 NOVs located near the edges of the ZZ Ceti instability strip. Our results are consistent with a pure mass-dependent ZZ Ceti instability strip.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 405, no. 4 (July 2010), p. 2561-2569Anãs brancasEstrelas ZZ CetiEstrelas variaveisPulsacoes estelaresCristalizaçãoStars: variables: generalWhite dwarfsNew developments of the ZZ Ceti instability strip : the discovery of 11 new variablesEstrangeiroinfo: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:UFRGSORIGINAL000750151.pdf000750151.pdfTexto completo (inglês)application/pdf1000076http://www.lume.ufrgs.br/bitstream/10183/90463/1/000750151.pdf63e76f6cc5b5fa8e5fd5c072332ae421MD51TEXT000750151.pdf.txt000750151.pdf.txtExtracted Texttext/plain35207http://www.lume.ufrgs.br/bitstream/10183/90463/2/000750151.pdf.txt3cdc716b70cfc8da32140fc130855261MD52THUMBNAIL000750151.pdf.jpg000750151.pdf.jpgGenerated Thumbnailimage/jpeg2193http://www.lume.ufrgs.br/bitstream/10183/90463/3/000750151.pdf.jpg7f288591098a448c7457894dd7722585MD5310183/904632018-10-18 09:20:04.728oai:www.lume.ufrgs.br:10183/90463Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-18T12:20:04Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv New developments of the ZZ Ceti instability strip : the discovery of 11 new variables
title New developments of the ZZ Ceti instability strip : the discovery of 11 new variables
spellingShingle New developments of the ZZ Ceti instability strip : the discovery of 11 new variables
Castanheira, Bárbara Garcia
Anãs brancas
Estrelas ZZ Ceti
Estrelas variaveis
Pulsacoes estelares
Cristalização
Stars: variables: general
White dwarfs
title_short New developments of the ZZ Ceti instability strip : the discovery of 11 new variables
title_full New developments of the ZZ Ceti instability strip : the discovery of 11 new variables
title_fullStr New developments of the ZZ Ceti instability strip : the discovery of 11 new variables
title_full_unstemmed New developments of the ZZ Ceti instability strip : the discovery of 11 new variables
title_sort New developments of the ZZ Ceti instability strip : the discovery of 11 new variables
author Castanheira, Bárbara Garcia
author_facet Castanheira, Bárbara Garcia
Kepler, Souza Oliveira
Kleinman, Scot James
Nitta, Atsuko
Fraga, Luciano
author_role author
author2 Kepler, Souza Oliveira
Kleinman, Scot James
Nitta, Atsuko
Fraga, Luciano
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Castanheira, Bárbara Garcia
Kepler, Souza Oliveira
Kleinman, Scot James
Nitta, Atsuko
Fraga, Luciano
dc.subject.por.fl_str_mv Anãs brancas
Estrelas ZZ Ceti
Estrelas variaveis
Pulsacoes estelares
Cristalização
topic Anãs brancas
Estrelas ZZ Ceti
Estrelas variaveis
Pulsacoes estelares
Cristalização
Stars: variables: general
White dwarfs
dc.subject.eng.fl_str_mv Stars: variables: general
White dwarfs
description Using the The SOuthern Astrophysical Research (SOAR) 4.1-m telescope, we report on the discovery of low amplitude pulsations for three stars previously reported as not-observed-tovary (NOV) by Mukadam et al. and Mullally et al., which are inside the ZZ Ceti instability strip. With the two pulsators discovered by Castanheira et al., we have now found variability in a total of five stars previously reported as NOVs.We also report the variability of eight new pulsating stars, not previously observed, bringing the total number of known ZZ Ceti stars to 148. In addition, we lowered the detection limit for 10 NOVs located near the edges of the ZZ Ceti instability strip. Our results are consistent with a pure mass-dependent ZZ Ceti instability strip.
publishDate 2010
dc.date.issued.fl_str_mv 2010
dc.date.accessioned.fl_str_mv 2014-04-08T01:50:03Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/90463
dc.identifier.issn.pt_BR.fl_str_mv 0035-8711
dc.identifier.nrb.pt_BR.fl_str_mv 000750151
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Monthly notices of the royal astronomical society. Oxford. Vol. 405, no. 4 (July 2010), p. 2561-2569
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