Fraction f_ap in the VIPERS data (orange and violet crosses) and in the model (grey lines). Crosses are the same as in Fig. 7. Solid grey lines refer to Rmocks and correspond to the grey polygons of Fig. 6. Dashed lines refer to Rmocks, but are computed after removing satellite galaxies that became satellites more than 3 Gyr before. The dotted lines refer to Rmocks, but are computed considering all the “young” satellite galaxies (i.e., that became satellites less than 2 Gyr before) to be active. See the text for more details.