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Interstellar cyanomethaneAn observational study was made of the newly identified cyanomethane radical CH2CN and the possibly related species CH3CN with the goals of elucidating the possible role of reactions of the type CnHm(+) + N in astrochemistry, and providing a possible test of Bates's models of dissociative electron recombination. A remarkably different abundance ratio CH2CN/CH3CN was found in TMC-1 and Sgr B2 which is deduced to be a result of the large difference in temperature of these objects. Studies of CH2CN and CH3CN in other sources, including two new detections of CH2CN, support this conclusion and are consistent with a monotonic increase in the CH2CN/CH3CN ratio with decreasing temperature over the range 10-120 K. This behavior may be explained by the destruction of CH2CN by reaction with O.
Document ID
19900048587
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Turner, B. E.
(National Radio Astronomy Observatory Charlottesville, VA, United States)
Friberg, P.
(Onsala Rymdobservatorium Sweden)
Irvine, W. M.
(Five College Radio Astronomy Observatory Amherst, MA, United States)
Saito, S.
(National Radio Astronomy Observatory Charlottesville, VA, United States)
Yamamoto, S.
(Nagoya University Japan)
Date Acquired
August 14, 2013
Publication Date
June 1, 1990
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 355
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
90A35642
Funding Number(s)
CONTRACT_GRANT: NAGW-436
Distribution Limits
Public
Copyright
Other

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