Fit of the RV (top) and BIS (bottom) curves with pyaneti. The blue points are the measurements with their uncertainties. On the top panel the black curve is the GP fit of the stellar activity (purple) plus the Keplerian modulation by the companion (red). The grey-shaded area is the 1σ uncertainty of the fit. On the bottom panel the black curve is showing the GP fit of the stellar activity only with its 1σ uncertainty in grey.