Discovery of fourteen new ZZ Cetis with SOAR
dc.contributor.author | Kepler, Souza Oliveira | pt_BR |
dc.contributor.author | Castanheira, Bárbara Garcia | pt_BR |
dc.contributor.author | Saraiva, Maria de Fátima Oliveira | pt_BR |
dc.contributor.author | Nitta, Atsuko | pt_BR |
dc.contributor.author | Kleinman, Scot James | pt_BR |
dc.contributor.author | Mullally, Fergal | pt_BR |
dc.contributor.author | Winget, Donald Earl | pt_BR |
dc.contributor.author | Eisenstein, D.J. | pt_BR |
dc.date.accessioned | 2014-07-26T02:09:20Z | pt_BR |
dc.date.issued | 2005 | pt_BR |
dc.identifier.issn | 0004-6361 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/98774 | pt_BR |
dc.description.abstract | We report the discovery of fourteen new ZZ Cetis with the 4.1 m Southern Astrophysical Research telescope, at Cerro Pachon, in Chile. The candidates were selected from the SDSS (Sloan Digital Sky Survey) DA white dwarf stars with Teff obtained from the optical spectra fit, inside the ZZ Ceti instability strip. Considering these stars are multi-periodic pulsators and the pulsations propagate to the nucleus of the star, they carry information on the structure of the star and evolution of the progenitors. The ZZ Cetis discovered till 2003 are mainly within 100 pc from the Sun, and probe only the solar vicinity. The recently discovered ones, and those reported here, may sample a distinct population as they were selected mainly perpendicular to the galactic disk and cover a distance up to ≈400 pc. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Astronomy and astrophysics. Les Ulis. Vol. 442, no. 2 (Nov. 2005), p. 629-634 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Stars: white dwarf | en |
dc.subject | Estrelas variaveis | pt_BR |
dc.subject | Catalogos astronomicos | pt_BR |
dc.subject | Stars: variables: general | en |
dc.subject | Stars: oscillations | en |
dc.subject | Pulsacoes estelares | pt_BR |
dc.subject | Espectros estelares | pt_BR |
dc.subject | Anãs brancas | pt_BR |
dc.subject | Anãs brancas | pt_BR |
dc.title | Discovery of fourteen new ZZ Cetis with SOAR | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000537582 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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