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Some Problems for Galactic Hydrostatic Equilibria

Published online by Cambridge University Press:  03 August 2017

H. DE BOER
H. DE BOER*
Affiliation:
Space Research Leiden, P.O. Box 9504 2333 AL Leiden, The Netherlands

Abstract

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Although locally a static, stable equilibrium seems consistent with observations of the interstellar medium (ISM), the extrapolation towards other galactic regions is not straightforward. Basically, the variation with galactic radius of the gravitational acceleration cannot be reconciled with the approximate constancy of the HI scaleheight. Moreover, halo gas located in the outer galaxy is prone to thermal instability and subsequent collapse towards the galactic plane.

Type
III. Theory and Modelling
Information
Symposium - International Astronomical Union , Volume 144: The Interstellar Disk-Halo Connection in Galaxies , 1991 , pp. 333 - 336
Copyright
Copyright © Kluwer 1991 

References

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