Detection of a New Carbon-Chain Molecule, CCO
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 1991
- DOI:
- 10.1086/186168
- Bibcode:
- 1991ApJ...380L..39O
- Keywords:
-
- Carbon Compounds;
- Dark Matter;
- Interstellar Matter;
- Molecular Clouds;
- Abundance;
- Astronomical Spectroscopy;
- Free Radicals;
- Radio Sources (Astronomy);
- Astrophysics;
- INTERSTELLAR: MOLECULES;
- NEBULAE: INDIVIDUAL ALPHANUMERIC: TMC-1;
- RADIO SOURCES: IDENTIFICATIONS