Normalised velocity of galaxies with respect of the cluster mean velocity vs. projected clustercentric distance for the cluster A2142 and its outskirts. Lines separate approximately the early and late infall galaxies with increasing time of infall; two different boundaries separate early and late infall time galaxies. Earliest infall galaxies with infall time t_inf > 1 Gyr lie between black dashed lines, calculated using R_vir, and late or ongoing infall galaxies with infall time t_inf < 1 Gyr lie above and below the lines, and on the right side of the lines (see Oman et al. 2013; Agulli et al. 2017, for details). Grey dash-dotted lines are calculated using R_max. Notations are the same as in Fig. 5; E indicates the early infall region and L indicates the late infall region.