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Creation of Peanut-Shaped Bulges via the Slow Mode of Bar Growth
- Publication Year :
- 2013
-
Abstract
- Recent theoretical work has implicated fast bar formation modes and subsequent evolution as the creation mechanism for the observed peanut-shaped bulges in some edge-on disk galaxies. We demonstrate an N-body simulation of a disk undergoing a contrasting slow mode of bar growth, unsubjected to a buckling instability, which nonetheless grows the 4:1 orbit family responsible for a peanut-shaped bulge. We also present a simulation with fast mode bar growth, which exhibits thickening similar to other work. A novel orbit classification method that finds dynamically distinct families is presented, allowing for a detailed analysis of angular momentum transfer channels within the disk.<br />Comment: 4 pages, 3 figures. To appear in the proceedings of the conference "The Structure and Dynamics of Disk Galaxies." M.S. Seigar and P. Treuthardt, eds
- Subjects :
- Astrophysics - Galaxy Astrophysics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1310.7920
- Document Type :
- Working Paper