Detection of C3 in the circumstellar shell of IRC + 10216

Details Detection of C3 in the circumstellar shell of IRC + 10216 Detection of C3 in the circumstellar shell of IRC + 10216

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988sci...241.1319h&link_type=abstract

Science (ISSN 0036-8075), vol. 241, Sept. 9, 1988, p. 1319-1322. Research supported by the Petroleum Research Fund and DOE.

Astronomy and Astrophysics

Astronomy

126

Carbon Stars, Line Spectra, Stellar Envelopes, Stellar Flares, Interstellar Matter, Molecular Rotation, Ultraviolet Astronomy, Vibrational Spectra

Scientific paper

Vibration-rotation lines of C3 have been identified in the circumstellar spectrum of the obscured carbon star IRC + 10216. This molecule is of interest in both the chemistry of flames, where it may be involved in the formation of soot, and in astrophysics, where it is a potential building block for carbonaceous grains. This high-resolution infrared detection of the pure carbon chain molecule C3 allows the estimation of the equilibrium C-C bond length, 1.297 angstroms. Possible astrophysical formation and destruction mechanisms for C3 are reviewed, including the relationship between C3 and carbon clusters.

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