Equilibrium and Stability of Elliptical Galaxies

Details Equilibrium and Stability of Elliptical Galaxies Equilibrium and Stability of Elliptical Galaxies

1995-10-25

arxiv.org/abs/astro-ph/9510132v1

Astronomy and Astrophysics

Astrophysics

uuencoded gziped PostScript, 11 pages including figures

Scientific paper

Recent work on the equilibrium and stability of ellipsoidal stellar systems is reviewed. The absence of constant-density cores in early-type galaxies 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 instabilities in two-integral oblate models are presented.

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