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Detection of a new carbon-chain molecule, CCO
The Astrophysical Journal1991Vol. 380, pp. L39–L39
Citations Over TimeTop 11% of 1991 papers
Masatoshi Ohishi, Shin-Ichi Ishikawa, Chikashi Yamada, Hideto Kanamori, W. M. Irvine, Ronald D. Brown, Peter D. Godfrey, Norio Kaifu, Hiroko Suzuki
Abstract
We have detected a new carbon-chain molecule, CCO(3 sigma-), in the cold, dark molecular cloud TMC-1. The excitation temperature and the column density of CCO are, respectively, approximately 6 K and approximately 6 x 10(11) cm-2. This column density corresponds to a fractional abundance relative to H2 of approximately 6 x 10(-11). 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.
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