Fig. 3
Radial velocities folded on the best fit orbital period. The upper panel shows the results when using the standard Heliocentric correction, and the lower panel when using the Ca ii K-line to correct the zero points. The symbols indicate the origin of the data points, i.e. SDSS (black), WHT 2009 (red) and 2010 (green), NOT 2011/09 (blue) and 2011/11 (magenta), and CAHA (cyan).
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