Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-23T17:10:55.614Z Has data issue: false hasContentIssue false

Peanut shaped bars

Published online by Cambridge University Press:  07 August 2017

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

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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
Copyright
Copyright © Kluwer 1993 

References

Combes, F & Sanders, R H, 1981. Astron. Astrophys. 96, 164.Google Scholar
Combes, F, Debbasch, F, Friedli, D & Pfenniger, D, 1990. Astron. Astrophys. 233, 82.Google Scholar
Raha, N, Sellwood, J A, James, R A & Kahn, F D, 1991. Nature 352, 411.CrossRefGoogle Scholar
Shaw, M, Wilkinson, A & Carter, D, 1992. Preprint Google Scholar