Fig. 3: Surface variations of XX Tri.
From: Long-term Doppler imaging of the star XX Trianguli indicates chaotic non-periodic dynamo
a Stellar effective temperature Teff in Kelvin as obtained from a five-parameter synthetic spectrum fit to all available observations. b Full-time series of the spot-filling factor f as defined in Eq. (6). f = 1 is the entire visible stellar surface. c Full-time series of the relative disk-integrated flux. A relative flux of unity is for an unspotted surface. Dots mark the reconstruction from the actual Doppler images (DIs), while the line indicates the reconstructions, including the interpolated movie images. Time is always plotted in Heliocentric Julian Days HJD. Source data are provided as a Source Data file.
