Assignment of Emission at 203 microns to Collisionally Excited CH

Details Assignment of Emission at 203 microns to Collisionally Excited CH Assignment of Emission at 203 microns to Collisionally Excited CH

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.8409p&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #84.09; Bulletin of the American Astronomical Society, Vol. 26, p.1458

Astronomy and Astrophysics

Astronomy

Scientific paper

An emission line observed at 203 microns in Orion A, DR 21, and W51 is tentatively attributed to emission from the second rotationally excited state (F2, N=2, J=3/2) of CH. Emission from this state has not previously been detected. In conjunction with a limit placed on a companion transition at 204 microns in Orion A, this detection would suggest collisional excitation of the emitting gas since the emitting state is of the same parity as the ground state and thus not radiatively coupled to it.

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