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2012•Astronomy and AstrophysicsOpen access

From CoRoT 102899501 to the Sun

P. Gondoin, D. Gandolfi, M. Fridlund, A. Frasca, E. W. Guenther, A. P. Hatzes, H. J. Deeg, H. Parviainen, Philipp Eigmüller, M. Deleuil

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Abstract

Aims. 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. Detailed observations of many young solar-type stars, such as the one reported in the present paper, provide insight into rotation and magnetic properties that may have prevailed on the Sun in its early evolution.

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Aims. 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. Detailed observations of many young solar-type stars, such as the one reported in the present paper, provide insight into rotation and magnetic properties that may have prevailed on the Sun in its early evolution.

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Available abstract

Aims. 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. Detailed observations of many young solar-type stars, such as the one reported in the present paper, provide insight into rotation and magnetic properties that may have prevailed on the Sun in its early evolution.

Key concepts: Starspot, Physics, Astrophysics, Rotation period, Stellar rotation, Differential rotation, Effective temperature, Metallicity

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