Radial velocity measurements for α Tau from the seven data sets phased to the orbital period.For the TLS and McD-Tull data we plot run-binned averages that were used in the orbital solution. The solid line is the orbital solution and the vertical line the peak-peak short term intrinsic RV variations observed for this star. Symbols are the same as for Fig. 2. Error bars for individual measurements are not shown for clarity and because the scatter is dominated by the intrinsic stellar variability.