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Cosmic Ray Induced Photodestruction of Interstellar Molecules

Published online by Cambridge University Press:  12 April 2016

R. Gredel ,
S. Lepp ,
A. Dalgarno  and
E. Herbst
R. Gredel
Affiliation:
Harvard-Smithsonian Center for Astrophysics European Southern Observatory
S. Lepp
Affiliation:
Harvard-Smithsonian Center for Astrophysics
A. Dalgarno
Affiliation:
Harvard-Smithsonian Center for Astrophysics
E. Herbst
Affiliation:
Department of Physics, Duke University

Abstract

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Ultraviolet photons are created in the interior of dense interstellar clouds by the impact excitation of molecular hydrogen by secondary electrons generated by cosmic ray ionization. The resulting photodissociation and photoionization rates of a wide range of interstellar molecules are calculated. The effects on the equilibrium chemical composition of dense clouds are briefly discussed.

Type
I. Molecular Clouds, Star Formation And HII Regions
Information
International Astronomical Union Colloquium , Volume 120: Structure and Dynamics of the Interstellar Medium , 1989 , pp. 32 - 37
Copyright
Copyright © Springer-Verlag 1989

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