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Galactic Fountains

Published online by Cambridge University Press:  12 April 2016

F. D. Kahn
F. D. Kahn*
Affiliation:
Department of Astronomy, The University, Manchester M13 9PL, England

Summary

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The intercloud medium (ICM) is kept hot and supplied with gas by supernova remnants of Type II. The rate at which mass is added balances the rate at which gas flows away from the ICM into the galactic halo. A fountain is thus formed, since the gas only has enough energy to escape from the disk, but not from the Galaxy as a whole. The upward flow must be followed by the descent of the gas, in the form of a shocked sheet: the return flow seems to be observed in the form of intermediate velocity clouds.

Type
VII. The Structure of the Interstellar Medium
Information
International Astronomical Union Colloquium , Volume 120: Structure and Dynamics of the Interstellar Medium , 1989 , pp. 474 - 483
Copyright
Copyright © Springer-Verlag 1989

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