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Observations of Atomic Gas in Photodissociation Regions

Published online by Cambridge University Press:  07 August 2017

Glenn J. White  and
Rachael Padman
Glenn J. White
Affiliation:
Department of Physics Queen Mary & Westfield College University of London Mile End Road London E1 4NS
Rachael Padman
Affiliation:
Cavendish Laboratory University of Cambridge Madingley Road Cambridge CB3 OHE

Abstract

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At the interface between an HII region and a molecular cloud, lies a neutral gas layer which is subject to both an intense radiation field, and to shocks arising from the expansion of the ionisation front of the HII region. The gas in these regions is highly excited, hot, and may be fairly dense. We present the first high resolution images of atomic carbon towards a sample of ionisation front sources. This study has relevance to our understanding of shock induced star formation, the formation and destruction of molecular species under extreme conditions, shock processes in the ISM, and the energy balance in molecular clouds.

Type
Chemistry of Interface Regions
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 297 - 302
Copyright
Copyright © Kluwer 1992 

References

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