Overview of semi-sinusoidal stellar variability with the CoRoT satellite ↠â†â&dagger

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dc.contributor.authorDe Medeiros J.R.
dc.contributor.authorFerreira Lopes C.E.
dc.contributor.authorLeao I.C.
dc.contributor.authorCanto Martins B.L.
dc.contributor.authorCatelan M.
dc.contributor.authorBaglin A.
dc.contributor.authorVieira S.
dc.contributor.authorBravo J.P.
dc.contributor.authorCortes C.
dc.contributor.authorDe Freitas D.B.
dc.contributor.authorJanot-Pacheco E.
dc.contributor.authorMaciel S.C.
dc.contributor.authorMelo C.H.F.
dc.contributor.authorOsorio Y.
dc.contributor.authorPorto De Mello G.F.
dc.contributor.authorValio A.
dc.date.accessioned2024-03-13T01:04:14Z
dc.date.available2024-03-13T01:04:14Z
dc.date.issued2013
dc.description.abstractContext. To date, the CoRoT space mission has produced more than 124 471 light curves. Classifying these curves in terms of unambiguous variability behavior is mandatory for obtaining an unbiased statistical view on their controlling root-causes. Aims. The present study provides an overview of semi-sinusoidal light curves observed by the CoRoT exo-field CCDs. Methods. We selected a sample of 4206 light curves presenting well-defined semi-sinusoidal signatures. The variability periods were computed based on Lomb-Scargle periodograms, harmonic fits, and visual inspection. Results. Color-period diagrams for the present sample show the trend of an increase of the variability periods as long as the stars evolve. This evolutionary behavior is also noticed when comparing the period distribution in the Galactic center and anti-center directions. These aspects indicate a compatibility with stellar rotation, although more information is needed to confirm their root-causes. Considering this possibility, we identified a subset of three Sun-like candidates by their photometric period. Finally, the variability period versus color diagram behavior was found to be highly dependent on the reddening correction. © 2013 ESO.
dc.description.volume555
dc.identifier.doi10.1051/0004-6361/201219415
dc.identifier.issn0004-6361
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36592
dc.relation.ispartofAstronomy and Astrophysics
dc.rightsAcesso Aberto
dc.subject.otherlanguageGeneral-Stars
dc.subject.otherlanguagePhotometric
dc.subject.otherlanguageRotation
dc.subject.otherlanguageStars
dc.subject.otherlanguageTechniques
dc.subject.otherlanguageVariables
dc.titleOverview of semi-sinusoidal stellar variability with the CoRoT satellite ↠â†â&dagger
dc.typeArtigo de revisão
local.scopus.citations35
local.scopus.eid2-s2.0-84879668860
local.scopus.subjectGalactic Center
local.scopus.subjectGeneral-stars
local.scopus.subjectPeriod distributions
local.scopus.subjectPhotometric
local.scopus.subjectStellar rotation
local.scopus.subjectTechniques
local.scopus.subjectVariables
local.scopus.subjectVisual inspection
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84879668860&origin=inward
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