Results Of Coordinated Multiwavelength Observations Of Solar-Type Stars
We present results of nearly simultaneous polarimetric and Ca II(H+K) emission observations taken over a full rotation period for a sample of six solar-type stars. Significant variations are seen for two stars in polarization and four stars in Ca emission, which we interpret as due to rotational modulation of magnetic areas on the stellar surface. The irregularity of the variations suggest changes of the area size and/or distribution in time scales of the rotation period. Preliminary models (including rough surface maps of two stars) and future prospects are discussed.
KeywordsCrimean Astrophysical Observatory Stellar Surface Magnetic Area Research Fellowship Program Emission Observation
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