Numerical experiments on the stability of hot stellar systems

Details Numerical experiments on the stability of hot stellar systems Numerical experiments on the stability of hot stellar systems

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nyasa.596..145s&link_type=abstract

(Galactic models; Proceedings of the 4th Florida Workshop on Nonlinear Dynamics, Gainesville, FL, Mar. 1, 2, 1989. A91-30826 12-

Mathematics

Probability

2

Astronomical Models, Elliptical Galaxies, Galactic Evolution, Hot Stars, Many Body Problem, Stellar Systems, Digital Simulation, Galactic Structure, Probability Distribution Functions, Spherical Harmonics

Scientific paper

Preliminary results on the stability of an oblate 'shell-orbit' model of a hot stellar system with an axial ratio of 5:1 and which appears to undergo several instabilities at the same time. Even a very flattened mode, although strongly unstable, evolves into a final system that is more flattened than observed elliptical galaxies. It is shown that violation of the positive-temperature conditions does not imply the existence of a spherical instability.

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