The spottedness of V775 Her, V833 Tau, and YZ CMi from long-term photometric observations

Details The spottedness of V775 Her, V833 Tau, and YZ CMi from long-term photometric observations The spottedness of V775 Her, V833 Tau, and YZ CMi from long-term photometric observations

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998arep...42..655a&link_type=abstract

Astronomy Reports, Volume 42, Issue 5, September 1998, pp.655-661

Astronomy and Astrophysics

Astronomy

5

Scientific paper

Photographic measurements and UBVRI photometry are used to calculate the photospheric spottedness of the three active red dwarf stars V775 Her, V833 Tau, and YZ CMi in the framework of a zonal spot model. The spotted regions can cover large fractions of the stellar surfaces: up to 42% of V775 Her, 68% of V833 Tau, and 21% of YZ CMi. The differences in the temperatures of the quiescent photosphere and spots are 900, 500, and 420 K, respectively.

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