Abstract
Hernquist’s (1990) mass model for spherical galaxies and bulges described by the deVaucouleur’s profile gives analytical expressions for the density profile and the potential. These have been used to derive a simple and exact analytical expression for the gravitational potential energy of a pair of interpene-trating spherical galaxies represented by this model. The results are compared with those for polytropic and Plummer models of galaxis.
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Narasimhan, K.S.V.S., Sastry, K.S. & Alladin, S.M. Gravitational potential energy of interpenetrating spherical galaxies in Hernquist’s model. J Astrophys Astron 18, 23–32 (1997). https://doi.org/10.1007/BF02714851
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DOI: https://doi.org/10.1007/BF02714851