New doublets in IRC+10216 - Vibrationally excited C4H?

Details New doublets in IRC+10216 - Vibrationally excited C4H? New doublets in IRC+10216 - Vibrationally excited C4H?

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...182l..37g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 182, no. 2, Aug. 1987, p. L37-L39.

Astronomy and Astrophysics

Astrophysics

37

Carbon Stars, Fine Structure, Molecular Spectra, Spectrum Analysis, Stellar Envelopes, Interstellar Matter, Molecular Energy Levels, Molecular Rotation, Radio Spectra, Vibrational Spectra

Scientific paper

The authors have discovered in the envelope of the carbon star IRC +10216 a new series of doublets arising from a reactive species in a 2Σ or 2A state. This new molecule is also observed in the laboratory in an acetylene discharge and it is therefore probably a hydrocarbon radical. Its rotation and centrifugal distortion constants are quite close to those of ground state C4H suggesting that the authors are observing C4H in an excited state, vibrational or electronic.

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