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Effects of Nonthermal Internal Energy on Postshock Oxygen Chemistry

Published online by Cambridge University Press:  04 August 2017

M. M. Graff ,
A. Dalgarno  and
A. F. Wagner
M. M. Graff
Affiliation:
Harvard-Smithsonian Center for Astrophysics Cambridge, Massachusetts, USA
A. Dalgarno
Affiliation:
Harvard-Smithsonian Center for Astrophysics Cambridge, Massachusetts, USA
A. F. Wagner
Affiliation:
Chemistry Division, Argonne National Laboratory Argonne, Illinois, USA

Abstract

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The internal energy distributions of reactants in shocked interstellar clouds are discussed. Rate coefficients appropriate for the oxygen chemistry of shocks differ significantly from those deduced by simple extrapolation of thermal measurements. A one-fluid MHD shock model examines nonthermal effects for a 10 km s−1 shock propagating through clouds of initial densities of 10 and 105 cm−3, using oxygen-hydrogen reaction rates that are specific to the vibrational, rotational, and fine structure temperatures of the reactants.

Type
Interstellar Medium
Information
Symposium - International Astronomical Union , Volume 120: Astrochemistry , 1987 , pp. 295 - 296
Copyright
Copyright © Reidel 1987 

References

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