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Title: New Suns in the Cosmos II: differential rotation in Kepler Sun-like stars
Authors: Chagas, M. L. das
Bravo, J. P.
Costa, A. D.
Lopes, C. E. Ferreira
Sobrinho, R. Silva
Paz-Chinchón, F.
Leão, I. C.
Valio, A.
Freitas, D. B. de
Martins, B. L. Canto
Lanza, A. F.
Medeiros, José Renan de
Keywords: Stars: rotation;Stars: solar;Type;Starspots
Issue Date: 2016
Publisher: Royal Astronomical Society
Citation: MEDEIROS, Jose Renan de et al. New Suns in the Cosmos II: Differential rotation in Sun-like stars. Monthly Notices of the Royal Astronomical Society (Print), [s. l.], v. 1143, p. stw2026, 2016. ISSN 1365-2966 versão online. DOI Disponível em: Acesso em: 28 maio 2020.
Portuguese Abstract: The present study reports the discovery of Sun-like stars, namely main-sequence stars with Teff, log g and rotation periods Prot similar to solar values, presenting evidence of surface differential rotation (DR). An autocorrelation of the time series was used to select stars presenting photometric signal stability from a sample of 881 stars with light curves collected by the Kepler space-borne telescope, in which we have identified 17 stars with stable signals. A simple two-spot model together with a Bayesian information criterion were applied to these stars in the search for indications of DR; in addition, for all 17 stars, it was possible to compute the spot rotation period P, the mean values of the individual spot rotation periods and their respective colatitudes, and the relative amplitude of the DR.
ISSN: 0035-8711 (print), 1365-2966 (online)
Appears in Collections:CCET - DFTE - Artigos publicados em periódicos

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