Spot Modelling of ζ Andromedae

Details Spot Modelling of ζ Andromedae Spot Modelling of ζ Andromedae

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.304...55k&link_type=abstract

Astrophysics and Space Science, Volume 304, Issue 1-4, pp. 55-57

Astronomy and Astrophysics

Astrophysics

Stars: Activity Of, Stars: Imaging, Stars: Individual: &Zeta, Andromedae, Stars: Late-Type, Starspots

Scientific paper

The photometric light modulation of ζ Andromedae originates from the distorted geometry of the primary, and additionally, from spots of which parameters (temperature, size, location) are variable in time. We present spot modelling results for six two-colour light curves which show that spots preferably appear on the stellar surface towards the companion star and opposite to it, where the distortion also causes dimming. Therefore, simple fitting of the measured data for the ellipticity effect does not yield correct result. Instead, ellipticity calculated from exact stellar parameters should be removed from the data to get reliable spotted light curves.

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