Hostname: page-component-5db6c4db9b-ldcpl Total loading time: 0 Render date: 2023-03-24T00:46:46.705Z Has data issue: true Feature Flags: { "useRatesEcommerce": false } hasContentIssue true

Stellar Orbits in Barred Galaxies with Nuclear Rings

Published online by Cambridge University Press:  12 April 2016

Clayton H. Heller
Universitäts Sternwarte, Geismarlandstraβe 11, D-37083 Göttingen, Germany
Isaac Shlosman
Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, USA
Rights & Permissions[Opens in a new window]


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

We investigate the dynamical response of stellar orbits in a rotating barred galaxy potential to the perturbation by a nuclear gaseous ring. The change in 3D periodic orbit families is examined as the gas accumulates near the inner Lindblad resonance. It is found that the x2/x3 loop extends to higher Jacobi energy and a vertical instability strip forms in each family. These strips are connected by a symmetric/anti-symmetric pair of 2:2:1 3D orbital families. A significant distortion of the x1 orbits is observed in the vicinity of the ring, which leads to the intersection between orbits over a large range of the Jacobi integral. We also find that a moderately elliptical ring oblique to the stellar bar produces significant phase shifts in the x1 orbital response.

Posters of Part VII and Part VIII
Copyright © Astronomical Society of the Pacific 1996


Athanassoula, E. 1992, MNRAS, 259, 345 CrossRefGoogle Scholar
Bosma, A. 1981, ApJ, 80, 1825 CrossRefGoogle Scholar
Buta, R. & Crocker, D.A. 1993, AJ, 105, 1344 CrossRefGoogle Scholar
de Vaucouleurs, G. 1963, ApJS, 8, 31 CrossRefGoogle Scholar
Heller, C.H. & Shlosman, I. 1995, ApJ, submittedGoogle Scholar
Kenney, J.D.P., Wilson, C.D., Scoville, N.Z., Devereux, N.A. & Young, J.S. 1992, ApJ, 395, L79 CrossRefGoogle Scholar
Knapen, J.H., Beckman, J.E., Shlosman, I., Peletier, R.F., Heller, C.H. & de Jong, R.S. 1995a, ApJ, 443, L73 CrossRefGoogle Scholar
Knapen, J.H., Beckman, J.E., Heller, C.H., Shlosman, I., & de Jong, R.S. 1995b, ApJ, 454 623 CrossRefGoogle Scholar
Kormendy, J. 1982, in Morphology and Dynamics of Galaxies, Martinet, L. & Mayor, M., Sauverny: Geneva Observatory, 113 Google Scholar
Kormendy, J. 1993, in Galactic Bulges, Dejonghe, H. & Habing, H., Dordrecht: Kluwer, 209 CrossRefGoogle Scholar
Shlosman, I., Frank, J., & Begelman, M.C. 1989, Nature, 338, 45 CrossRefGoogle Scholar
Telesco, C.M. & Decher, R. 1988, ApJ, 334, 573 CrossRefGoogle Scholar