Starspots and active regions on the chromospherically active binary MS Ser

Details Starspots and active regions on the chromospherically active binary MS Ser Starspots and active regions on the chromospherically active binary MS Ser

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...403..205a&link_type=abstract

Astronomy and Astrophysics, v.403, p.205-215 (2003)

Astronomy and Astrophysics

Astrophysics

5

Stars: Activity, Stars: Chromospheres, Stars: Magnetic Fields, Stars: Starspots

Scientific paper

The quasisimultaneous electrophotometric, polarimetric and spectroscopic observations of the chromospherically active binary MS Ser are presented. The photometric variability of the star can be described completely by a zonal spottedness model. Spotted regions occupy up to 21% of the total stellar surface. The temperature difference between the unspotted photosphere and starspots is about 1300 K. Starspots are localized at the middle latitudes. We detected the broad-band linear polarization of the stellar light and its rotational modulation connected with the local magnetic region on the stellar surface. We suspect that there is a space connection between plages, magnetic regions and the mostly spotted stellar longitudes.

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