Discovery of a new PG 1159 (GW Vir) pulsator

dc.contributor.author	Kepler, Souza Oliveira	pt_BR
dc.contributor.author	Fraga, Luciano	pt_BR
dc.contributor.author	Winget, Donald Earl	pt_BR
dc.contributor.author	Bell, Keaton	pt_BR
dc.contributor.author	Córsico, Alejandro Hugo	pt_BR
dc.contributor.author	Werner, Klaus	pt_BR
dc.date.accessioned	2014-11-15T02:15:56Z	pt_BR
dc.date.issued	2014	pt_BR
dc.identifier.issn	0035-8711	pt_BR
dc.identifier.uri	http://hdl.handle.net/10183/106995	pt_BR
dc.description.abstract	We report the discovery of pulsations in the spectroscopic PG 1159 type pre-white dwarf SDSS J075415.12 + 085232.18. Analysis of the spectrum by Werner et al. indicated Teff = 120 000 ± 10 000 K, log g = 7.0 ± 0.3, mass M= 0.52 ± 0.02Mʘ, C/He = 0.33 by number. We obtained time series images with the SOAR 4.1 m telescope and 2.1 m Otto Struve telescope at McDonald Observatory and show the star is also a variable PG 1159 type star, with dominant period of 525 s.	en
dc.format.mimetype	application/pdf
dc.language.iso	eng	pt_BR
dc.relation.ispartof	Monthly notices of the Royal Astronomical Society. Oxford. Vol. 442, no. 3 (Aug. 2014), p. 2278–2281	pt_BR
dc.rights	Open Access	en
dc.subject	Stars: individual: SDSS J075415.12 + 085232.18	en
dc.subject	Anãs brancas	pt_BR
dc.subject	White dwarfs	en
dc.title	Discovery of a new PG 1159 (GW Vir) pulsator	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.identifier.nrb	000942394	pt_BR
dc.type.origin	Estrangeiro	pt_BR

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