CoRot observations of active giants: preliminary results

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.

doi:doi:10.1063/1.3099253

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AIP Conference Proceedings / Volume 1094

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CoRot observations of active giants: preliminary results

AIP Conf. Proc. 1094, pp. 864-867; doi:http://dx.doi.org/10.1063/1.3099253 (4 pages)

COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun

Date: 21–25 July 2008

Location: St. Andrews (Scotland)

P. Gondoin, M. Fridlund, M. J. Goupil, F. Baudin, R. Samadi, C. Barban, K. Belkacem, T. Corbard, M. A. Dupret, B. Foing, R. den Hartog, Y. Lebreton, J. Lochard, P. Mathias, E. Michel, P. Morel, A. Moya, A. Palacios, and J. P. Zahn

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Abstract

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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.