Fig. 7

Difference between our radial velocities and those from Nidever et al. (2002) (left panel) and Chubak et al. (2012) (right panel) as a function of the B − V colour index. Red dots indicate the stars they have analysed with an M template, while for the other ones they used the solar spectrum as reference. The offset and rms values are given for FGK stars and for M stars in Table 5.
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