Left: Periodogram of the RV residuals of HD39194, after sequentially removing, from top to bottom, the instrumental RV offsets (free parameters), the 14.03 d (resp. 5.63 d and 33.91 d) Keplerian signals and a third-order drift plus a linear term with . Right: Periodogram of the RV residuals of HD93385, after sequentially removing, from top to bottom, the instrumental RV offsets (free parameters), the 13.18 d (resp. 45.84 d and 7.34 d) Keplerian signals. False alarm probability (FAP) thresholds are shown as horizontal lines for FAP=10%, 1% and 0.1%.