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Structure and dynamics of barred spiral galaxies with an asymmetric mass distribution

Published online by Cambridge University Press:  14 August 2015

G. De Vaucouleurs  and
K. C. Freeman
G. De Vaucouleurs
Affiliation:
University of Texas, Austin, Tex., U.S.A.
K. C. Freeman
Affiliation:
Australian National University, Canberra, Australia

Abstract

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The asymmetric structure and dynamics of late-type barred spirals is analyzed in terms of a model consisting of a small prolate spheroid (the bar) displaced from the center of a large oblate spheroid (the disk). The non-axisymmetric motions predicted for this model are in remarkable agreement with optical and radio observations of internal motions in several magellanic barred spirals, including NGC 4027 and the Large Cloud. In particular, the model explains the displacement of the apparent center of the rotation curve from the center of the bar.

Type
Part III/Theory of Spiral Structure
Information
Symposium - International Astronomical Union , Volume 38: The Spiral Structure of our Galaxy , 1970 , pp. 356 - 362
Copyright
Copyright © Reidel 1970 

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