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Density Waves in Galaxy Disks Containing Gas

Published online by Cambridge University Press:  03 August 2017

G. Bertin
G. Bertin*
Affiliation:
Scuola Normale Superiore Piazza dei Cavalieri Pisa 56126-I Italy

Abstract

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The cold interstellar medium plays a dominant role in determining the observed spiral structure in galaxies not only because it is the site of the generation of young and bright objects, but also because it is both a source of excitation (Jeans instability) and of regulation (since it can dissipate) for the overall dynamics of the disk. Here I review a physical picture of spiral galaxies developed in the last few years and present recent results on the mechanism of self-regulation of the disk, on the modeling of individual objects, and on the modeling of categories of spiral galaxies (morphological classification).

Type
IV- Models of Spiral Structure
Information
Symposium - International Astronomical Union , Volume 146: Dynamics of Galaxies and their Molecular Cloud Distributions , 1991 , pp. 93 - 104
Copyright
Copyright © Kluwer 1991 

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