Spots and Active Regions on Emission Stars. III. LQ Hya

Details Spots and Active Regions on Emission Stars. III. LQ Hya Spots and Active Regions on Emission Stars. III. LQ Hya

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ap.....46...28a&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 46, Issue 1, p. 28-45 (2003).

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

Quasisimultaneous photoelectric, polarimetric, and spectroscopic observations of the active single red dwarf LQ Hya are presented. The photometric variability of LQ Hya is fully described by a zone model. Spotted regions occupy up to 25% of the entire surface of the star with a temperature difference of 800 K between the spots and the calm photosphere. The spots are localized in the middle and low latitudes. A cyclical variation is observed in the total areas of the spotted regions and in the average latitude of the spots. The most spotted regions, local magnetic fields, and chromospherically active regions tend to concentrate in the same distinct active longitudes.

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