Publication Date:
2019-07-12
Description:
A 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.
Keywords:
ASTROPHYSICS
Type:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X); 380; L39-L42
Format:
text
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