Rotational excitation of interstellar OH molecules

Details Rotational excitation of interstellar OH molecules Rotational excitation of interstellar OH molecules

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...215..497k&link_type=abstract

Astrophysical Journal, Part 1, vol. 215, July 15, 1977, p. 497-502. Research supported by the U.S.-Israel Bi-National Science F

Astronomy and Astrophysics

Astrophysics

6

Diatomic Molecules, Hydroxides, Interstellar Matter, Molecular Excitation, Molecular Rotation, Angular Momentum, Electron Transitions, Emission Spectra, Interstellar Chemistry, Line Spectra, Molecular Collisions, Molecular Spectra, Temperature Effects

Scientific paper

The relative rates for exciting rotational states of OH in collisions with H (or H2) at low temperatures are estimated. It is found that these rates are dominated by the statistical (phase space) factors which favor the production of the lowest rotationally excited states of OH. The required conditions for collisional pumping of the OH 1720-MHz emission line are thus satisfied.

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