Evidence for a Strong End-On Bar in the Ringed Sigma-Drop Galaxy NGC 6503
arXiv:0912.0247 · doi:10.1088/0004-6256/139/3/865
Abstract
We use WIYN High-resolution Infrared Camera (WHIRC) H (1.6 micron) band imaging, archival Spitzer, HST, and GALEX data, simulations and data from the literature to argue for the presence of a strong end-on bar in nearby spiral galaxy NGC 6503. The evidence consists of both photometric and kinematic signatures as well as resonant structures present in the galaxy which are most often associated with bars. These include a central peak followed by a plateau in the surface brightness profile, an extreme decrement in the central stellar velocity dispersion (a sigma-drop), and the presence of an inner ring as well as a circumnuclear disk with spiral structure. In this framework the previously identified nuclear star-forming ring is instead a young inner ring spanned in diameter by the strong end-on bar.
7 pages, 7 figures - some lower resolution, uses emulateapj, accepted to the Astronomical Journal
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Cited by in corpus (5)
- Interlocking Resonance Patterns in Galaxy Disks
- Searching for Non-axisymmetries in NGC 6503: A Weak End-on Bar
- The Dependence of the Hierarchical Distribution of Star Clusters on Galactic Environment
- Dynamical Models for NGC 6503 using a Markov Chain Monte Carlo Technique
- Detecting Adiabatic Contraction in Rotation Curves