Radial velocity measurements of Kepler-432. Upper panel: CAFE (blue circles) and FIES (red squares) RVs, and Keplerian fit to the data (black solid line) – including the linear RV trend. Middle panel: RV residuals. The rms is ~17 m/s and ~5 m/s for the CAFE and FIES data, respectively. The observed rms of the FIES RVs is consistent with the expected value of ~ 6 m/s for a star with log g = 3.35 dex (Hekker et al. 2008; Nowak 2013). Quadratically adding a jitter of 6 m/s to our formal RV measurement errors does not change the derived orbital parameters significantly (<1σ). Additionally, a fit to the FIES data alone yields consistent results within 1σ. Lower panel: bisector velocity spans (BVS) of the FIES CCF versus RVs, assuming that the error bars of the former are twice those of the latter.