The chemistry of SH(+) in shocked interstellar gas

Details The chemistry of SH(+) in shocked interstellar gas The chemistry of SH(+) in shocked interstellar gas

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.221..673m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 221, Aug. 1, 1986, p. 673-678. SERC-USAF-supported rese

Other

30

Endothermic Reactions, Hydrogen Sulfide, Interstellar Chemistry, Interstellar Gas, Shock Waves, Hydrocarbons, Kinetic Energy, Magnetohydrodynamic Waves

Scientific paper

The rate coefficients of the reversible reactions S(+) + H2 yields SH(+) + H, SH(+) + H2 yields H2S(+) + H, and H2S(+) + H2 yields H3S(+) + H are determined experimentally and applied to predict the production of SH(+) by magnetic and nonmagnetic hydrodynamic shocks in interstellar clouds. It is shown that SH(+) column densities much lower than those of CH(+) result from thermally driven endothermic reactions in nonmagnetic shocks, whereas SH(+) densities about the same as CH(+) densities are predicted for the kinetically driven reactions in magnetic shocks. It is suggested that the SH(+) column density can be used as an observational indicator of the shock type in regions where CH(+) is present.

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