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Nonequilibrium chemistry in shocked molecular cloudsThe gas-phase chemistry is studied behind a 10-km/s shock propagating into a dense molecular cloud. The principal conclusions are that: the concentrations of certain molecules (CO, NH3, HCN, N2) are unperturbed by the shock; other molecules (H2CO, CN, HCO(+)) are greatly decreased in abundance; and substantial amounts of H2O, HCO, and CH4 are produced. Approximately 1 million yr (independent of the density) must elapse after shock passage before chemical equilibrium is attained.
Document ID
19790032901
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Iglesias, E. R.
(California Univ. Berkeley, CA, United States)
Silk, J.
(California, University Berkeley, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
December 15, 1978
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
79A16914
Funding Number(s)
CONTRACT_GRANT: NGR-05-003-578
Distribution Limits
Public
Copyright
Other

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