Deprojected Sérsic profile. The enclosed mass M(<r) normalized by the total mass M_tot, within a spherical radius r normalized by the scale length a. As indicated, the colors represent different Sérsic indices n and the line styles different intrinsic shapes given by the intrinsic axis ratios p = b/a and q = c/a. The top panel is for spheroidal shapes, either oblate axisymmetric (q < 1) or prolate axisymmetric (q > 1), and the bottom panel for fully triaxial shapes.