Phase-folded curve of the RV data using the 74-day periodicity for the CCF data (left panel) and the 86-day periodicity for the TERRA data (right panel) after subtracting the signals shown in Fig. 6. The red dots are the same points binned in phase with a bin size of 0.1. The error bar of a given bin is estimated using the weighted standard deviation of binned measurements divided by the square root of the number of measurements included in this bin. The blue solid line shows the best fit to the data using a double harmonic sinusoidal fit.