Left panel: Example of a power spectra density of a Kepler LC (grey) ‘with peaks’ fitted by the model detailed in Sect.2. The transit component due to the single-transit spots is dash-dotted orange line, the multiple-transit spots component in a dashed light green line and the total fit in blue. The rotation peaks are marked by purple dashed lines. Right panel: Example of a peakless power spectra density of a star where the Harvey profile is used for the fit.