Seismology of a massive pulsating hydrogen atmosphere white dwarf
dc.contributor.author | Kepler, Souza Oliveira | pt_BR |
dc.contributor.author | Pelisoli, Ingrid Domingos | pt_BR |
dc.contributor.author | Antonio, Viviane Peçanha | pt_BR |
dc.contributor.author | Costa, Jose Eduardo da Silveira | pt_BR |
dc.contributor.author | Fraga, Luciano | pt_BR |
dc.contributor.author | Hermes, James J. | pt_BR |
dc.contributor.author | Winget, Donald Earl | pt_BR |
dc.contributor.author | Castanheira, Bárbara Garcia | pt_BR |
dc.contributor.author | Córsico, Alejandro Hugo | pt_BR |
dc.contributor.author | Romero, Alejandra Daniela | pt_BR |
dc.contributor.author | Althaus, Leandro Gabriel | pt_BR |
dc.contributor.author | Kleinman, Scot James | pt_BR |
dc.contributor.author | Nitta, Atsuko | pt_BR |
dc.date.accessioned | 2015-01-20T02:15:16Z | pt_BR |
dc.date.issued | 2012 | pt_BR |
dc.identifier.issn | 0004-637X | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/109055 | pt_BR |
dc.description.abstract | We report our observations of the new pulsating hydrogen atmosphere white dwarf SDSS J132350.28+010304.22. We discovered periodic photometric variations in frequency and amplitude that are commensurate with nonradial g-mode pulsations in ZZ Ceti stars. This, along with estimates for the star’s temperature and gravity, establishes it as a massive ZZ Ceti star. We used time-series photometric observations with the 4.1 m SOAR Telescope, complemented by contemporary McDonald Observatory 2.1 m data, to discover the photometric variability. The light curve of SDSS J132350.28+010304.22 shows at least nine detectable frequencies. We used these frequencies to make an asteroseismic determination of the total mass and effective temperature of the star: M★ = 0.88±0.02Mʘ and Teff = 12,100±140 K. These values are consistent with those derived from the optical spectra and photometric colors. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | The astrophysical journal. Bristol. Vol. 757, no. 2 (Oct. 2012), 177, 7 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Anãs brancas | pt_BR |
dc.subject | Stars: fundamental parameters | en |
dc.subject | Stars: oscillations | en |
dc.subject | Atmosferas estelares | pt_BR |
dc.subject | White dwarfs | en |
dc.subject | Fotometria estelar | pt_BR |
dc.subject | Pulsacoes estelares | pt_BR |
dc.subject | Espectros estelares | pt_BR |
dc.subject | Estrelas variaveis | pt_BR |
dc.subject | Séries temporais | pt_BR |
dc.title | Seismology of a massive pulsating hydrogen atmosphere white dwarf | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000869113 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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