Detection of a new carbon-chain molecule, CCO.
Detection of a new carbon-chain molecule, CCO.
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检测新的碳链分子 CCO。
DOI：
10.1086/186168
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
N. Kaifu
中科院分区：
文献类型：
--
作者：
M. Ohishi;H. Suzuki;Ishikawa S;C. Yamada;H. Kanamori;W. Irvine;R. Brown;P. Godfrey;N. Kaifu
我们在冷暗分子云TMC-1中检测到一种新的碳链分子CCO（3 sigma-）。CCO的激发温度和柱密度分别约为6 K和6 × 10（11）cm-2。该柱密度对应于相对于H2约6 × 10 - 11的丰度分数。这个值比相关碳链分子CCS的丰度小两个数量级，大约是C3 O的一半。讨论了CCO的形成机理。
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.