Detection of a new carbon-chain molecule, CCO

Details Detection of a new carbon-chain molecule, CCO Detection of a new carbon-chain molecule, CCO

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...380l..39o&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 380, Oct. 10, 1991, p. L39-L42. Research supported by Japan-U.S.

Astronomy and Astrophysics

Astronomy

34

Carbon Compounds, Dark Matter, Interstellar Matter, Molecular Clouds, Abundance, Astronomical Spectroscopy, Free Radicals, Radio Sources (Astronomy)

Scientific paper

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.

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