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On the Relationship between Lenses and Inner Rings in Spiral Galaxies

Published online by Cambridge University Press:  25 April 2016

M. P. Schwarz
M. P. Schwarz*
Affiliation:
Mathematics Department, Monash University (Present Address: CSIRO Division of Mineral Engineering)
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Abstract

In simulations of gas flow in the gravitational field of model barred galaxies which we have described elsewhere, structures resembling inner rings have formed. The model rings encircle the bar as observed in real galaxies, but are more elongated than the average inner ring. In this paper we show that the addition of a lens-like component to the background field results in much rounder rings. Indeed the shape and position of the model rings are very sensitive to any steep gradients in the azimuthally averaged surface density near the ends of the bar.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 6 , Issue 2 , 1985 , pp. 202 - 205
Copyright
Copyright © Astronomical Society of Australia 1985

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References

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