Top panel: Lomb-Scargle (LS) periodogram of the RVs. The periodogram of the Lick data only is shown in black, while the LS periodogram of the complete RV dataset is shown in red. A RV offset and a jitter term are individually fitted for each dataset in addition to a global linear trend. The highest peak at ~ 735 ± 10 d is consistentwith the planet claimed by Wittenmyer et al. (2011). Center panel: LS periodogram of the residuals to the Keplerian orbit fit of the ~735 d signal. The highest peak at 980 d hints at the presence of a second planet in the system. Bottom panel: LS periodogram of the residuals to the Keplerian orbital fit of the two main signals. The horizontal lines in the panels show a false alarm probability level of 0.1% in black and red for Lick and complete dataset, respectively. The period of the highest peak in the LS periodogram is indicated with the color corresponding to each of the datasets.