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| Paper: |
Creation of Peanut-Shaped Bulges via the
Slow Mode of Bar Growth |
| Volume: |
480, Structure and Dynamics of Disk Galaxies |
| Page: |
157 |
| Authors: |
Petersen, M. S.; Weinberg, M. D.; Katz, N. |
| 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. |
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