Stacked radial source density profiles of the CXB subtracted LMXBs in four groups of galaxies with different M_⋆ and S_N, marked in the plots. The profiles are not corrected for incompleteness. The predicted distributions of LMXBs based on the K_S-band light are plotted with solid histograms. They take into account the source detection incompleteness, as described in Sect. 3.1. All groups show excess LMXBs in their outskirts, except for galaxies with small M_⋆ and small S_N.