(a) 1D ﹩{\sigma }_{\mu }﹩ vs. r for the five distinct populations. We least-squares fitted a 3rd-order polynomial to the population B profile (﹩\langle {\sigma }_{\mu }^{{\rm{B}}}\rangle ﹩) (black curve). The half-light radius, ﹩1.5\times {r}_{{\rm{h}}}﹩, and ﹩2\times {r}_{{\rm{h}}}﹩ (dashed and dotted lines) are also indicated. Panels (b)–(e) show the normalized difference between ﹩{\sigma }_{\mu }﹩ of populations A, C, D, and E, respectively, with respect to that of the reference population B. Colored points refer to bins containing the same number of stars per population. Black points refer to three fixed radial intervals: (1) ﹩r\leqslant {r}_{{\rm{h}}}﹩, (2) ﹩{r}_{{\rm{h}}}\lt r\leqslant 1.5\times {r}_{{\rm{h}}}﹩, and (3) ﹩1.5\times {r}_{{\rm{h}}}\lt r\leqslant 2\times {r}_{{\rm{h}}}﹩. See the text for details.