The theory of bars of disk galaxies as aligned orbits

Details The theory of bars of disk galaxies as aligned orbits The theory of bars of disk galaxies as aligned orbits

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69...10p&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 69, no. 1, Jan.-Feb. 1992, p. 10-18. In Russian.

Astronomy and Astrophysics

Astronomy

7

Barred Galaxies, Galactic Nuclei, Orbit Perturbation, Radial Velocity, Stellar Orbits, Gravitational Effects, Many Body Problem, Stellar Models

Scientific paper

Considerations in favor of the formation of bars in SB galaxies as a result of radial orbit instability are presented. An extremely simple quantitative theory of this instability is used to calculate the characteristic parameters of central minibars found earlier in the N-body simulations of Athanassoula and Sellwood (1986) but misinterpreted. Possible ways of improving the theory are considered; in particular, several new approaches to numerical modeling of collisionless gravitating systems are proposed.

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