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The Plume Phenomenon in Barred Spirals

Published online by Cambridge University Press:  25 April 2016

R. Buta*
Affiliation:
Mount Stromlo and Siding Spring Observatories, Research School of Physical Sciences, Australian National University

Extract

Barred spirals are well-known to include several ‘distinct components’ or morphological structures in the light distribution (Sandage 1961; de Vaucouleurs 1959; Kormendy 1979). In addition to the bar, spheroid, and disk components, one often observes ring-like enhancements at discrete relative positions within the disk. These inner rings (r), outer rings (R), and nuclear rings (nr) have been the subject of recent, fairly intensive observational (Buta 1984a; Kormendy J979; de Vaucouleurs and Buta 1980a,b; Athanassoula et al. 1982) and theoretical (Schwarz 1979,1981,1984a,b,c; Simkin, Su, and Schwarz 1980) research, and it now seems well-established that most rings are linked to dynamical resonances with the bar.

Type
Contributions
Copyright
Copyright © Astronomical Society of Australia 1984

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