HD 60532 spectroscopic data. Top row: HD 60532 RV time series (left), Lomb-Scargle periodogram of the RV (middle) and temporal window of the observations (right). The Keplerian fit is superimposed (red solid line) to the RV. On the periodogram, the false-alarm probability (FAP) at 1% (solid line) is indicated in red; the planet periods are indicated in blue. Second and third rows: BIS and FWHM time series, corresponding Lomb-Scargle periodograms and correlations with the RV data. Fourth row: RV residuals from planet c, corresponding Lomb-Scargle periodogram and correlation with BIS. The planet b Keplerian fit is superimposed on to the residuals, and planet b period is superimposed in blue on the periodogram. Fifth row: RV residuals from the two-planet Keplerian fit, corresponding Lomb-Scargle periodogram, and correlation with BIS.