Gravitational potential energy of interpenetrating spherical galaxies in Hernquist’s model |
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| Authors: | K S V S Narasimhan K S Sastry Saleh Mohammed Alladin |
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| Institution: | (1) Centre for Astronomy and Astrophysics, Inter University, Ganeshkhind, 411007 Pune, India;(2) Present address: Department of Astronomy, Osmania University, 500007 Hyderabad |
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| 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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| Keywords: | Stellar systems: dynamics galaxies: interactions |
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