Collisional rate coefficients of C3H2 and the determination of physical conditions in molecular clouds

Details Collisional rate coefficients of C3H2 and the determination of physical conditions in molecular clouds Collisional rate coefficients of C3H2 and the determination of physical conditions in molecular clouds

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...337..306a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 337, Feb. 1, 1989, p. 306-317.

Astronomy and Astrophysics

Astrophysics

20

Cyclic Hydrocarbons, Interstellar Matter, Molecular Clouds, Molecular Collisions, Transition Probabilities, Brightness Temperature, Molecular Excitation, Radiative Transfer

Scientific paper

Collisional excitation rates for C3H2, calculated using the coupled states approximation at temperatures of 10-30 K, are presented. C3H2 produces a number of spectral line pairs whose members are close together in frequency but arise from levels with different excitation energies. The rates are used in statistical equilibrium calculations to illustrate the excitation properties and density-dependent behavior of various C3H2 line ratios.

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