CoRot observations of active giants: preliminary results

We have analysed rotation modulated light-curves of active giants observed with CoRot using spots model. Preliminary results suggest an increase of the surface spot coverage with decreasing rotation period. A maximum of the surface spot coverage seems to occur on giants with effective temperature ar...

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Hauptverfasser:	Gondoin, P, Fridlund, M, Goupil, M J, Baudin, F, Samadi, R, Barban, C, Belkacem, K, Corbard, T, Dupret, M A, Foing, B, den Hartog, R, Lebreton, Y, Lochard, J, Mathias, P, Michel, E, Morel, P, Moya, A, Palacios, A, Zahn, J P
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Astrophysics Physics Solar and Stellar Astrophysics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	We have analysed rotation modulated light-curves of active giants observed with CoRot using spots model. Preliminary results suggest an increase of the surface spot coverage with decreasing rotation period. A maximum of the surface spot coverage seems to occur on giants with effective temperature around 5100 K. Confirmation and interpretation of these preliminary results require groundbased follow-up observations to measure activity indicators, to identify binary systems, and to determine the stellar parameters and evolutionary status of the sample giants.
ISSN:	0094-243X
DOI:	10.1063/1.3099253