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CoRot observation of a young Sun-like star

Published online by Cambridge University Press:  18 July 2013

P. Gondoin ,
D. Gandolfi ,
M. Fridlund ,
E. W. Guenther  and
A. Hatzes
P. Gondoin
Affiliation:
European Space Agency, ESTEC - Postbus 299, 2200 AG Noordwijk, The Netherlands
D. Gandolfi
Affiliation:
European Space Agency, ESTEC - Postbus 299, 2200 AG Noordwijk, The Netherlands
M. Fridlund
Affiliation:
European Space Agency, ESTEC - Postbus 299, 2200 AG Noordwijk, The Netherlands
E. W. Guenther
Affiliation:
Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany
A. Hatzes
Affiliation:
Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany
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Abstract

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The present study reports measurements of the rotation period of a young solar analogue, estimates of its surface coverage by photospheric starspots and of its chromospheric activity level, and derivations of its evolutionary status. It compares the chromospheric activity level of this young star with a model of chromospheric activity evolution established by combining relationships between the R′HK index and the Rossby number with a recent model of stellar rotation evolution on the main-sequence.

Keywords

stars: activitystars: atmospheresstars: late-typestars: magnetic fieldsstars: rotationstars: spots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 199 - 200
Copyright
Copyright © International Astronomical Union 2013 

References

Barnes, S. A. 2010, ApJ, 722, 222 Google Scholar
Gondoin, P., Gandolfi, D., Fridlund, M. et al. 2012, A&A, acceptedGoogle Scholar
Mamajek, E. E. & Hillenbrand, L. A. 2008, ApJ, 687, 1264 Google Scholar