Gravitational Potential Energy of Interpenetrating Spherical Galaxies in Hernquist's Model

Details Gravitational Potential Energy of Interpenetrating Spherical Galaxies in Hernquist's Model Gravitational Potential Energy of Interpenetrating Spherical Galaxies in Hernquist's Model

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997japa...18...23n&link_type=abstract

Journal of Astrophysics and Astronomy, Vol. 18, p.23

Astronomy and Astrophysics

Astrophysics

1

Stellar Systems: Dynamics, Galaxies: Interactions

Scientific paper

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 interpenetrating spherical galaxies represented by this model. The results are compared with those for polytropic and Plummer models of galaxies.

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