3D radial number density of galaxies for the four bins in mass defined in Table 1 (from top to bottom) at redshift zero. The left column gives the stacked profiles and uncertainties (dots and error bars) and the best-fit Einasto model with the 1σ and 2σ uncertainties (shaded regions) for the LR_HYDRO (blue) and HR_DMONLY (red) simulations. In the middle and right column we display the radial galaxy density distribution per galaxy-cluster relative mass for the LR_HYDRO and HR_DMONLY simulations, respectively. The color bars indicate the number density of galaxies.