Differential Photometry of EK Dra and 29 Dra

Details Differential Photometry of EK Dra and 29 Dra Differential Photometry of EK Dra and 29 Dra

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005seraj.170..111z&link_type=abstract

Serbian Astronomical Journal, Vol. 170, p. 111-114 (http://saj.matf.bg.ac.yu/)

Astronomy and Astrophysics

Astronomy

1

Stars: Individual: Ek Dra, 29 Dra, Stars: Late-Type, Starspots

Scientific paper

We report on BVR precise photometry of active late-type stars EK Dra and 29 Dra in the spring of 2004. The analysis suggests a reasonable fit with single spot model for both cases in the season as far as the V-curve is concerned. The spots are generally cooler than surrounding photosphere and are at high latitudes. The maximal brightness changes for both stars implying a non-rotating component of activity signatures, the spots. We expect that the spot configuration is stable over the period of approximately three months.

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