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Fig. 2.

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Histograms of dimensionless projected clustercentric distance (left) and LOS peculiar velocity (right) for the passive (PS, top, red) and non-passive (AC+TR combined, bottom, light-blue) spectral classes of S0 galaxies in the MR cluster sample. A test of normality (D’Agostino 1971) yields p-values of 0.3243 and 0.3785 for S0–PS and S0–AC+TR, respectively.

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