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Detection of interstellar DNC - Difficulties of chemical equilibrium hypothesis for enrichmentThe J = 1-0 transition of DNC at 76.3058 GHz has been observed in emission in NGC 2264. Comparison with previous observations of HN(C-13) indicates that deuterium is enriched in DNC similarly to the enrichment reported for DCO(+) in this source. The DNC/HNC ratio is estimated to be about 1/24. The results cannot readily be interpreted in terms of chemical equilibria relating to the formation of DNC. It is suggested that the explanation must be sought in isotope effects on rates of formation of interstellar molecules.
Document ID
19770064744
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Godfrey, P. D.
(Monash Univ. Clayton, Australia)
Brown, R. D.
(Monash Univ. Clayton, Australia)
Gunn, H. I.
(Monash Univ. Clayton, Australia)
Blackman, G. L.
(Monash University Clayton, Victoria, Australia)
Storey, J. W. V.
(California, University Berkeley, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1977
Publication Information
Publication: Royal Astronomical Society
Subject Category
Astrophysics
Accession Number
77A47596
Funding Number(s)
CONTRACT_GRANT: NSF AST-75-20353
CONTRACT_GRANT: NGL-05-003-272
Distribution Limits
Public
Copyright
Other

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