RV histogram for the entire data set of γ Velorum cluster showing the entire RV range (upper panel) and a zoom of the cluster range (bottom panel) compared with the total PDF (solid line) obtained by adding the Jeffries et al. (2014) cluster model to the field PDF performed by us (thick dashed line). Vertical dotted lines delimits the [RV_inf,RV_sup] range used to select RV cluster member candidates.