Chaotic orbits in barred galaxies with central mass concentrations

Details Chaotic orbits in barred galaxies with central mass concentrations Chaotic orbits in barred galaxies with central mass concentrations

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...361...69h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 361, Sept. 20, 1990, p. 69-77.

Astronomy and Astrophysics

Astronomy

143

Barred Galaxies, Black Holes (Astronomy), Chaos, Galactic Nuclei, Galactic Rotation, Stellar Motions, Astronomical Models, Elliptical Galaxies, Many Body Problem, Mass Distribution

Scientific paper

The dynamical interaction of a black hole or central mass concentration with the inner regions of a rapidly rotating barred galaxy is studied. Stochastic regions appear as the central mass is increased. These are associated with the appearance and outward movement of an inner Linblad resonance related to an increase of central mass. The fundamental family of orbits sustaining the bar will dissolve at approximately the point where this resonance reaches the end of the bar. More elongated bars dissolve more easily, and orbits closer to the center become stochastic more readily.

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