Gravitational potential energy of a pair of overlapping galaxies

Details Gravitational potential energy of a pair of overlapping galaxies Gravitational potential energy of a pair of overlapping galaxies

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.129....1a&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 129, no. 1, Jan. 1987, p. 1-9.

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Galactic Structure, Gravitational Fields, Mass Distribution, Potential Energy, Stellar Systems, Computational Astrophysics, Galactic Nuclei

Scientific paper

The interaction of the gravitational potential energy of a pair of overlapping Plummer-model galaxies is determined exactly for various separations r of their centres. It is shown that the results can be well represented by the simple relation W(r) = -GM1M2/(r2+ɛ2)1/2, where 1/ɛ is the average reciprocal distance between the stars of two galaxies of masses M1 and M2 when they have zero separation.

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