Projection coefficient c_p as a function of aperture radius R in arcseconds. Curves associated to the same r_core are grouped with the same color, with r_cut = 5, 10, 20, 100 arcsec, from bottom to top. The thick dashed red and green lines correspond to typical values of r_core and r_cut derived from our lensing+dynamics modeling of clusters. The dashed black horizontal line corresponds to .