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Detection of a new interstellar molecule, H2CNWe have detected a new interstellar molecule, H2CN (methylene amidogen), in the cold, dark molecular cloud TMC-1. The column density of H2CN is estimated to be approximately 1.5 x 10(exp 11) cm(exp -2) by assuming an excitation temperature of 5 K. This column density corresponds to a fractional abundance relative to H2 of approximately 1.5 x 10(exp -11). This value is more than three orders of magnitude less than the abundance of the related molecule HCN in TMC-1. We also report a tentative detection of H2CN in Sgr B2(N). The formation mechanism of H2CN is discussed. Our detection of the N2CN molecule may suggest the existence of a new series of carbon-chain molecules, CH2C(n)N (N = 0, 1, 2, ...).
Document ID
19950031813
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Ohishi, Masatoshi
(Nobeyama Radio Observatory Nobeyama, Japan)
Mcgonagle, Douglas
(Univ. of Massachusetts, Amherst, MA United States)
Irvine, William M.
(Univ. of Massachusetts, Amherst, MA United States)
Yamamoto, Satoshi
(Univ. of Tokyo Bunkyo, Tokyo, Japan)
Saito, Shuji
(Inst. for Molecular Science Myodaiji, Okazaki, Japan)
Date Acquired
August 16, 2013
Publication Date
May 20, 1994
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 427
Issue: 1
ISSN: 0004-637X
Subject Category
Astronomy
Accession Number
95A63412
Funding Number(s)
CONTRACT_GRANT: NSF AST 91-15721
CONTRACT_GRANT: NAGW-436
Distribution Limits
Public
Copyright
Other

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