Time-series Doppler imaging of the red giant HD 208472. Active longitudes and differential rotation
Time-series Doppler imaging of the red giant HD 208472. Active longitudes and differential rotation
HD 208472 is among the most active RS~CVn binaries with cool starspots. Decade-long photometry has shown that the spots seem to change their longitudinal appearance with a period of about six years, coherent with brightness variations. Our aim is to spatially resolve the stellar surface of HD 208472 and relate …