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For refcode 1993MNRAS.265.1013C:
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NED Abstract

Copyright by Royal Astronomical Society. 1993MNRAS.265.1013C On the shape of the light profiles of early-type galaxies N. Caon, M. Capaccioli and M. D'Onofrio International School for Advanced Studies, Via Beirut 2,34014 Trieste, Italy Dipartimento di Astronomia, Universita di Padova, Vicolo Osservatorio 5,35122 Padova, Italy Osservatorio Astronomico di Capodimonte, Via Moiariello 16,80131 Napoli, Italy Accepted 1993 July 15. Received 1993 July 12; in original form 1993 April 8 ABSTRACT We have obtained the best fit to the light profiles of a luminosity- limited sample of elliptical and S0 galaxies with a power law r^1/n^, letting the exponent remain free rather than keeping it fixed at 1/n = 1/4 as in the well-known de Vaucouleurs formula. The introduction of a free parameter in the fitting formula (ranging from n = 0.5 for (r_e_) = 0.3 kpc to n = 16 for (r_e_) = 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 consequences for the claimed independence of the shape of galaxy profiles with respect to the Fundamental Plane parameters. Key words: galaxies: elliptical and lenticular, cD - galaxies: fundamental parameters - galaxies: photometry - galaxies: structure.
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