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On some Observational Restrictions to Galactic Spiral Structure Theories

Published online by Cambridge University Press:  03 August 2017

A.M. Fridman ,
V.L. Polyachenko  and
A.V. Zasov
A.M. Fridman
Affiliation:
Astronomical Council of the USSR Academy of Sciences, Moscow USSR
V.L. Polyachenko
Affiliation:
Astronomical Council of the USSR Academy of Sciences, Moscow USSR
A.V. Zasov
Affiliation:
Sternberg State Astronomical Institute, Moscow USSR

Extract

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We would like to draw attention to some observational data which should not be neglected, in our opinion, in developing spiral structure theories. Some of these results demonstrate Le Chatelier principle well-known in physics. According to this principle, any physical process is proceeding to cancel its cause. Localization of galactic disks near the marginal curves of various instabilities shown below indicates the important role that these instabilities play in evolutionary processes of disks.

Type
IV- Models of Spiral Structure
Information
Symposium - International Astronomical Union , Volume 146: Dynamics of Galaxies and their Molecular Cloud Distributions , 1991 , pp. 109 - 111
Copyright
Copyright © Kluwer 1991 

References

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