Active longitudes on XX Tri from 2006 to 2012. a) The overall mean distribution of the spot area (histogram in bins of 15°) is shown. The spot area is given in solar hemispheres on the left axis (1 SH = 3.05 Gm²) and relative to the total area of a stellar hemisphere of XX Tri on the right axis. The dashed line represents the phase toward the companion star, whereas the dotted line represents the phase in the opposite direction. b) Spot longitudes as a function of time. Spots A–E from all Doppler images are shown. The filled dots represent the larger spot at any given time. The dashed and dotted lines represent again the phases toward the companion star and in the opposite direction, respectively.