Fig. 4

(in m s−1) vs.
for SOPHIE (in blue) and SOPHIE+ (in orange) datasets. The symbol size is proportional to B− V with values between 0.5 and 1.2. The black lines represent the relation derived by Santos et al. (2000) for G-type stars
with a fit uncertainty of 0.18 dex. The red lines represent the relation derived from the datasets of this work,
with a fit uncertainty of 0.3 dex.
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