Detection of interstellar C4D - Implications for ion-molecule chemistry

Details Detection of interstellar C4D - Implications for ion-molecule chemistry Detection of interstellar C4D - Implications for ion-molecule chemistry

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...347l..39t&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 347, Dec. 1, 1989, p. L39-L42.

Astronomy and Astrophysics

Astrophysics

24

Deuterium Compounds, Hydrocarbons, Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Abundance, Electron Transitions, Molecular Spectra

Scientific paper

C4D has been detected in the cold interstellar cloud TMC-1 by means of the five strongest hyperfine components of the N = 2-1 transition at 17.6 GHz. An abundance ratio C4D/C4H = 0.0043 is found, in agreement with chemical models. By contrast, C3HD/C3H2 roughly 0.08 in TMC-1, nearly an order of magnitude larger than predicted. Implications of these discrepant ratios for ion-molecule chemistry are discussed.

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