Theoretical reinvestigation of hydrocarbon and cyanoacetylene abundances in TMC-1

Details Theoretical reinvestigation of hydrocarbon and cyanoacetylene abundances in TMC-1 Theoretical reinvestigation of hydrocarbon and cyanoacetylene abundances in TMC-1

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...285..618h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 285, Oct. 15, 1984, p. 618-621. Research supported by the Science and Engin

Astronomy and Astrophysics

Astrophysics

53

Abundance, Hydrocarbons, Interstellar Chemistry, Molecular Clouds, Nebulae, Acetylene, Cyano Compounds

Scientific paper

The products of the reaction between C3H+ and H2 at low temperatures were previously reported incorrectly by the authors to be C3H2+ + H. The only product at 80K (and presumably at lower temperatures) is C3H3+, formed via a saturated three-body association reaction. Use of the analogous radiative association reaction with a rate coefficient of 10-11cm3s-1 as well as a newly measured rate coefficient for the radiative association reaction between CH3+ and H2 in Herbst's "semidetailed" model of the dense interstellar cloud TMC-1 results in improved agreement between theoretical and observed hydrocarbon and cyanoacetylene abundances.

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