Stability of star clusters as galactic satellites. IV Logarithmic galactic potential

Details Stability of star clusters as galactic satellites. IV Logarithmic galactic potential Stability of star clusters as galactic satellites. IV Logarithmic galactic potential

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...138..404a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 138, no. 2, Sept. 1984, p. 404-407.

Astronomy and Astrophysics

Astrophysics

3

Galactic Nuclei, Motion Stability, Star Clusters, Stellar Gravitation, Stellar Motions, Astronomical Models, Dwarf Galaxies, Gravitational Fields, Logarithms, Two Body Problem

Scientific paper

The results of an investigation on the linear stability of star clusters orbiting a galaxy with a logarithmic gravitational potential are presented. This galactic model gives rise to a flat rotation curve, which appears to approximate satisfactorily the rotation curve of the Galaxy (as well as other spiral galaxies). The present model favors the cluster stability more than the point-mass model, as expected. A qualitative agreement of these results with King's (1962) and Keenan's (1981 a, b) approaches, as discussed in a previous paper (Angeletti and Giannone, 1984, Paper III), is confirmed.

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