Bar Formation, Evolution and Destruction

Details Bar Formation, Evolution and Destruction Bar Formation, Evolution and Destruction

1995-08-25

arxiv.org/abs/astro-ph/9508119v1

Astronomy and Astrophysics

Astrophysics

12 pages, uuencoded compressed PostScript, text only. Invited review to appear in "Barred Galaxies", IAU Colloquium 157, edite

Scientific paper

I review the various mechanisms for creating bars in rotating stellar disks, and conclude that the swing-amplified feed-back loop, which produces rapidly tumbling bars, remains the most probable. The bar continues to evolve after its formation in a number of ways; here I discuss what appears to be inevitable thickening normal to the plane, continued spiral activity in the outer disk and also underscore the increasingly important problem presented by angular momentum loss to the halo. Finally, I examine possible means, excluding interaction, by which bars in galaxies could be destroyed.

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