A wavelet analysis of photometric variability in Kepler white dwarf stars

dc.contributor.authorMartins, Bruno Leonardo Canto
dc.contributor.authorLira, S. R. de
dc.contributor.authorBravo, J. P.
dc.contributor.authorLeão, I. C.
dc.contributor.authorCosta, A. D. da
dc.contributor.authorFreitas, D. B. de
dc.contributor.authorMedeiros, J. R. de
dc.date.accessioned2020-07-06T18:46:40Z
dc.date.available2020-07-06T18:46:40Z
dc.date.issued2019-01-12
dc.description.resumoThis work describes a wavelet analysis of 14 Kepler white dwarf stars, in order to confirm their photometric variability behaviour and to search for periodicities in these targets. From the observed Kepler light curves we obtained the wavelet local and global power spectra. Through this procedure, one can perform an analysis in the time–frequency domain rich in detail, and so obtain a new perspective on the time evolution of the periodicities present in these stars. We identified a photometric variability behaviour in 10 white dwarfs, corresponding to period variations of ∼2 h to 18 d: among these stars, three are new candidates and seven, earlier identified from other studies, are confirmed.pt_BR
dc.identifier.citationLIRA, S. R. de; BRAVO, J. P.; LEÃO, I. C.; COSTA, A. D. da; MARTINS, Bruno Leonardo Canto; FREITAS, D. B. de; MEDEIROS, J. R. de. A wavelet analysis of photometric variability in Kepler white dwarf stars. Monthly Notices Of The Royal Astronomical Society, [s.l.], v. 484, n. 3, p. 3935-3940, 12 jan. 2019. ISSN 1365-2966 versão online. Disponível em: https://academic.oup.com/mnras/article/484/3/3935/5288632. Acesso em: 06 jul. 2020. http://dx.doi.org/10.1093/mnras/stz122.pt_BR
dc.identifier.doihttp://dx.doi.org/10.1093/mnras/stz122.
dc.identifier.issn0035-8711 (print), 1365-2966 (online)
dc.identifier.urihttps://repositorio.ufrn.br/jspui/handle/123456789/29459
dc.languageenpt_BR
dc.publisherOxford University Press (OUP)pt_BR
dc.subjectStars: white dwarfspt_BR
dc.subjectMethods: data analysispt_BR
dc.subjectTechniques: photometricpt_BR
dc.titleA wavelet analysis of photometric variability in Kepler white dwarf starspt_BR
dc.typearticlept_BR

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