Gravitational potential energy of interpenetrating spherical galaxies in Hernquist’s model

Gravitational potential energy of interpenetrating spherical galaxies in Hernquist’s model

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...

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Veröffentlicht in:Journal of astrophysics and astronomy 1997-06, Vol.18 (1), p.23-32
Hauptverfasser: Narasimhan, K. S. V. S., Sastry, K. S., Alladin, Saleh Mohammed
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
Galactic bulge
Galaxies
Gravity
Mathematical analysis
Modelling
Potential energy
Stars & galaxies
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Zusammenfassung: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.[PUBLICATION ABSTRACT]
ISSN:0250-6335
0973-7758
DOI:10.1007/BF02714851