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Title:
Differential rotation on active late-type stars observed with Corot
Authors:
Gondoin, P.; Fridlund, M.; Gandolfi, D.; Güenter, E.
Affiliation:
AA(European Space Agency, ESTEC - Postbus 299, 2200 AG Noordwijk, The Netherlands), AB(European Space Agency, ESTEC - Postbus 299, 2200 AG Noordwijk, The Netherlands), AC(Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany), AD(Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany)
Publication:
Solar and Stellar Variability: Impact on Earth and Planets, Proceedings of the International Astronomical Union, IAU Symposium, Volume 264, p. 60-62
Publication Date:
02/2010
Origin:
CUP
Keywords:
stars: activity, stars: late-type, stars: rotation, stars: spots
DOI:
10.1017/S1743921309992365
Bibliographic Code:
2010IAUS..264...60G

Abstract

One major topic in studying stellar activity is to explain how phenomena seen on the Sun and stars, and specially magnetic phenomena, depend on stellar properties such as rotation and age. Differential rotation is an important physical process in theories of stellar magnetic field generation. The solar surface differential rotation was initially discovered via the simple method of tracking the rotation rates of individual starspots at different latitudes. Adopting a similar principle, high accuracy light curves of active stars observed with the CoRoT satellite are analyzed using a model based on the rotational modulation of the visibility of active regions.

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