The Case of the Off-Center, Levitating Bar in the Large Magellanic Cloud
Abstract
I explore the hypothesis that many of the unusual aspects of the apparent stellar bar of the Large Magellanic Cloud (LMC) are the result of viewing a triaxial stellar bulge that is embedded in a highly obscuring thin disk. Specifically, this hypothesis explains the observed off-center position of the bar within the disk, the differing apparent distances of the bar and disk, the near alignment of the bar's major-axis position angle and the disk's line of nodes, and the asymmetric appearance of the bar itself. Indirectly, it may also play a role in explaining the microlensing rate toward the LMC and the recently observed large velocity dispersion of RR Lyrae stars.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 2004
- DOI:
- arXiv:
- arXiv:astro-ph/0408533
- Bibcode:
- 2004ApJ...614L..37Z
- Keywords:
-
- Galaxies: Photometry;
- Galaxies: Stellar Content;
- Galaxies: Magellanic Clouds;
- Astrophysics
- E-Print:
- 5 emulateapj style pages, accepted for publication in ApJL