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Detection of a new carbon-chain molecule, CCOA new carbon-chain molecule, CCO 3Sigma(-), has been detected in the cold dark molecular cloud TMC-1. The excitation temperature and the column density of CCO are, respectively, about 6 K and about 6 x 10 to the 11th/sq cm. This column density corresponds to a fractional abundance relative to H2 of about 6 x 10 to the -11th. This value is two orders of magnitude less than the abundance of the related carbon-chain molecule CCS, and about half that of C3O. The formation mechanism for CCO is discussed.
Document ID
19910069720
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/186168
Authors
Ohishi, Masatoshi (Nobeyama Solar Radio Observatory Nobeyama, Japan)
Ishikawa, Shin-Ichi (Nobeyama Radio Observatory Minamimaki, Japan)
Yamada, Chikashi (Optoelectronics Technology Research Laboratory Tsukuba, Japan)
Kanamori, Hideto (Tokyo, University Japan)
Irvine, William M. (Massachusetts, University Amherst, United States)
Brown, Ronald D. (Nobeyama Solar Radio Observatory Nobeyama, Japan)
Godfrey, Peter D. (Monash University Clayton, Australia)
Kaifu, Norio (National Astronomical Observatory Mitaka, Japan)
Suzuki, Hiroko (Nobeyama Solar Radio Observatory Nobeyama, Japan)
Date Acquired
August 14, 2013
Publication Date
October 10, 1991
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 380
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
91A54343
Funding Number(s)
CONTRACT_GRANT: NAGW-436
Distribution Limits
Public
Copyright
Other

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