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On the Stability of Ionization Fronts

Published online by Cambridge University Press:  03 August 2017

F. D. Kahn
F. D. Kahn*
Affiliation:
Department of Astronomy, Manchester University, Manchester, England

Extract

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The boundaries between HII and HI regions often have shapes which suggest that the motion of the interstellar gas is unstable there. A characteristic shape of this kind is the so-called “elephant's trunk,” a long tongue of dark material (presumably an HI region) seen superimposed on the luminous HII region, and outlined by a thin rim brighter than the luminous background. A detailed study of these shapes has recently been made by Pottasch; earlier observations had been made by Duncan and by Struve.

Type
Part VI: Conditions at the Ionization and Shock Fronts in Collisions of Gas Clouds
Information
Symposium - International Astronomical Union , Volume 8: Cosmical Gas Dynamics , July 1958 , pp. 1058 - 1061
Copyright
Copyright © American Physical Society 1958 

References

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