Recent work on the equilibrium and stability of ellipsoidal stellar systems is reviewed. The absence of constant-density cores in early-type galaixes implies that chaos and high-order resonances are generic features of the motion in triaxial stellar systems. Bending instabilities are now well understood and may provide the answers to a number of long-standing riddles, including the absence of highly flattened elliptical galaxies and the formation of galactic bulges. Some preliminary results on instabilites in two-integral oblate models are presented.

Date of creation, presentation, or exhibit



ASP Conf. Ser. 86 (1995) 13 "Fresh Views of Elliptical Galaxies" Astronomical Society of the Pacific Conference Series, Volume 86; Proceedings of the INAOE International Meeting held in Pueblo; Mexico; 14-17 March 1995; San Francisco: Astronomical Society of the Pacific (ASP)||Also archived in: astro-ph/9510132 25 Oct 1995 AND Rutgers Astrophysics Preprint Series No. 164 The N-body results shown in Figure 4 were prepared by Monica Valluri. This work was supported by NSF grant AST 90-16515 and NASA grant NAG 5-2803. ISBN: 1-886733-07-4Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

Document Type

Conference Proceeding

Department, Program, or Center

School of Physics and Astronomy (COS)


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