Evidence of mass segregation. The galaxies were divided into bins according to their stellar mass. This plot shows the variation of R_hm(M_⋆), which is the half-mass radius of the cluster members inside the nth bin normalized to the global half-mass radius, with galactic mass. The errors were evaluated as , where s_N is the standard deviation of the projected radius distribution inside the nth bin, and N is the number of elements inside the nth bin.