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Bar Formation, Evolution and Destruction

Published online by Cambridge University Press:  12 April 2016

J. A. Sellwood
J. A. Sellwood*
Affiliation:
Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08855

Abstract

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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.

Type
Part V. Theory of Barred Galaxies I.
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 259 - 272
Copyright
Copyright © Astronomical Society of the Pacific 1996

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