Discovery of eleven new ZZ Ceti stars

Detalhes bibliográficos
Autor(a) principal: Reimers, Dieter
Data de Publicação: 2006
Outros Autores: Castanheira, Bárbara Garcia, Kepler, Souza Oliveira, Mullally, Fergal, Winget, Donald Earl, Koester, Detlev, Voss, Björn, Kleinman, Scot James, Nitta, Atsuko, Eisenstein, D.J., Napiwotzki, Ralf
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/98975
Resumo: We report the discovery of eleven new ZZ Cetis using telescopes at OPD (Observatório do Pico dos Dias/LNA) in Brazil, the 4.1 m SOAR (Southern Astrophysical Research) telescope at Cerro Pachon, Chile, and the 2.1 m Otto Struve telescope at McDonald observatory. The candidates were selected from the SDSS (Sloan Digital Sky Survey) and SPY (ESO SN Ia progenitor survey), based on their Teff obtained from optical spectra fitting. This selection criterion yields the highest success rate of detecting new ZZ Cetis, above 90% in the Teff range from 12 000 to 11 000 K. We also report on a DA not observed to vary, with a Teff placing the star close to the blue edge of the instability strip. Among our new pulsators, one is slightly cooler than this star for which pulsations were not detected. Our observations are an important constraint on the location of the blue edge of the ZZ Ceti instability strip.
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spelling Reimers, DieterCastanheira, Bárbara GarciaKepler, Souza OliveiraMullally, FergalWinget, Donald EarlKoester, DetlevVoss, BjörnKleinman, Scot JamesNitta, AtsukoEisenstein, D.J.Napiwotzki, Ralf2014-07-31T02:05:08Z20060004-6361http://hdl.handle.net/10183/98975000558559We report the discovery of eleven new ZZ Cetis using telescopes at OPD (Observatório do Pico dos Dias/LNA) in Brazil, the 4.1 m SOAR (Southern Astrophysical Research) telescope at Cerro Pachon, Chile, and the 2.1 m Otto Struve telescope at McDonald observatory. The candidates were selected from the SDSS (Sloan Digital Sky Survey) and SPY (ESO SN Ia progenitor survey), based on their Teff obtained from optical spectra fitting. This selection criterion yields the highest success rate of detecting new ZZ Cetis, above 90% in the Teff range from 12 000 to 11 000 K. We also report on a DA not observed to vary, with a Teff placing the star close to the blue edge of the instability strip. Among our new pulsators, one is slightly cooler than this star for which pulsations were not detected. Our observations are an important constraint on the location of the blue edge of the ZZ Ceti instability strip.application/pdfengAstronomy and astrophysics. Vol. 450, no. 1 (April IV 2006), p. 227-331Estrelas ZZ CetiStars: white dwarfsStars: variables: generalStars: oscillationsDiscovery of eleven new ZZ Ceti 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:UFRGSORIGINAL000558559.pdf000558559.pdfTexto completo (inglês)application/pdf169071http://www.lume.ufrgs.br/bitstream/10183/98975/1/000558559.pdf08a741ea1a8b8dd4006927ebf8ab6634MD51TEXT000558559.pdf.txt000558559.pdf.txtExtracted Texttext/plain20925http://www.lume.ufrgs.br/bitstream/10183/98975/2/000558559.pdf.txt182ed10b20029695e5ce8547ef5ab776MD52THUMBNAIL000558559.pdf.jpg000558559.pdf.jpgGenerated Thumbnailimage/jpeg2077http://www.lume.ufrgs.br/bitstream/10183/98975/3/000558559.pdf.jpge4098b9e57870c6c50a6e04387edf4b3MD5310183/989752018-10-22 08:18:36.981oai:www.lume.ufrgs.br:10183/98975Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-22T11:18:36Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Discovery of eleven new ZZ Ceti stars
title Discovery of eleven new ZZ Ceti stars
spellingShingle Discovery of eleven new ZZ Ceti stars
Reimers, Dieter
Estrelas ZZ Ceti
Stars: white dwarfs
Stars: variables: general
Stars: oscillations
title_short Discovery of eleven new ZZ Ceti stars
title_full Discovery of eleven new ZZ Ceti stars
title_fullStr Discovery of eleven new ZZ Ceti stars
title_full_unstemmed Discovery of eleven new ZZ Ceti stars
title_sort Discovery of eleven new ZZ Ceti stars
author Reimers, Dieter
author_facet Reimers, Dieter
Castanheira, Bárbara Garcia
Kepler, Souza Oliveira
Mullally, Fergal
Winget, Donald Earl
Koester, Detlev
Voss, Björn
Kleinman, Scot James
Nitta, Atsuko
Eisenstein, D.J.
Napiwotzki, Ralf
author_role author
author2 Castanheira, Bárbara Garcia
Kepler, Souza Oliveira
Mullally, Fergal
Winget, Donald Earl
Koester, Detlev
Voss, Björn
Kleinman, Scot James
Nitta, Atsuko
Eisenstein, D.J.
Napiwotzki, Ralf
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Reimers, Dieter
Castanheira, Bárbara Garcia
Kepler, Souza Oliveira
Mullally, Fergal
Winget, Donald Earl
Koester, Detlev
Voss, Björn
Kleinman, Scot James
Nitta, Atsuko
Eisenstein, D.J.
Napiwotzki, Ralf
dc.subject.por.fl_str_mv Estrelas ZZ Ceti
topic Estrelas ZZ Ceti
Stars: white dwarfs
Stars: variables: general
Stars: oscillations
dc.subject.eng.fl_str_mv Stars: white dwarfs
Stars: variables: general
Stars: oscillations
description We report the discovery of eleven new ZZ Cetis using telescopes at OPD (Observatório do Pico dos Dias/LNA) in Brazil, the 4.1 m SOAR (Southern Astrophysical Research) telescope at Cerro Pachon, Chile, and the 2.1 m Otto Struve telescope at McDonald observatory. The candidates were selected from the SDSS (Sloan Digital Sky Survey) and SPY (ESO SN Ia progenitor survey), based on their Teff obtained from optical spectra fitting. This selection criterion yields the highest success rate of detecting new ZZ Cetis, above 90% in the Teff range from 12 000 to 11 000 K. We also report on a DA not observed to vary, with a Teff placing the star close to the blue edge of the instability strip. Among our new pulsators, one is slightly cooler than this star for which pulsations were not detected. Our observations are an important constraint on the location of the blue edge of the ZZ Ceti instability strip.
publishDate 2006
dc.date.issued.fl_str_mv 2006
dc.date.accessioned.fl_str_mv 2014-07-31T02:05:08Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/98975
dc.identifier.issn.pt_BR.fl_str_mv 0004-6361
dc.identifier.nrb.pt_BR.fl_str_mv 000558559
identifier_str_mv 0004-6361
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url http://hdl.handle.net/10183/98975
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Astronomy and astrophysics. Vol. 450, no. 1 (April IV 2006), p. 227-331
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