CoRot observations of active giants: preliminary results.

Authors :: 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.
Source :: AIP Conference Proceedings; 2/16/2009, Vol. 1094 Issue 1, p864-867, 4p, 5 Graphs
Publication Year :: 2009
Abstract: 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. [ABSTRACT FROM AUTHOR]