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We have obtained the best fit to the light profiles of a luminosity limited sample of elliptical and S0 galaxies with a power law, letting the exponent remain free rather than keeping it fixed at 1/n=1/4 as in the well known formula. The introduction of a free parameter in the fitting formula (ranging from n=0. 5 for =0. 3 kpc to n=16 for =25 kpc) is justified by the existence of a good correlation between n and the global galaxian parameters, such as total luminosity and scale-radius. This result seems to be in line with the segregation of properties between the `ordinary' and `bright' families of early-type galaxies, and has consequence for the claimed independence of the shape of galaxy profiles with respect to the Fundamental Plane parameters.
Caon et al. (Wed,) studied this question.