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Peanut shaped bars

Published online by Cambridge University Press:  07 August 2017

J. A. Sellwood
J. A. Sellwood*
Affiliation:
Department of Physics and Astronomy, Rutgers University P O Box 849, Piscataway NJ 08855-0849, U.S.A.

Abstract

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Recent 3-D N-body simulations have shown that the bars formed through the well-known global instability of discs later acquire a pronounced peanut shape when seen from the side. This paper reports a new calculation of the phenomenon using a finer grid and a slightly different initial model. The final peanut shaped bar, when viewed from within the disc, has an appearance remarkably similar to that of the Milky Way bulge. When viewed as a distant edge-on galaxy, an observer would see cylindrical rotation in the “bulge”.

Type
Contributed Papers
Information
Symposium - International Astronomical Union , Volume 153: Galactic Bulges , 1993 , pp. 391 - 392
Copyright
Copyright © Kluwer 1993 

References

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