Observation of far-infrared transitions between excited states of OH

Details Observation of far-infrared transitions between excited states of OH Observation of far-infrared transitions between excited states of OH

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...296..149v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 296, Sept. 1, 1985, p. 149-151.

Astronomy and Astrophysics

Astrophysics

15

Hydroxyl Emission, Infrared Spectra, Interstellar Matter, Orion Nebula, Radiative Transfer, Self Absorption, Emission Spectra, Hydroxyl Radicals, Molecular Interactions, Transition

Scientific paper

In observations of the Kleinmann-Low nebula of Orion the authors have detected 84.42 and 84.60 μm transitions between the 2Π3/2 J = 7/2 and 2Π3/2 J = 5/2 levels of OH with respective fluxes of 1.0×10-17 and 1.4×10-17W cm-2. When compared to 119 μm flux levels of OH discussed by Watson and 163 μm flux levels of these radicals by Viscuso et al., these results suggest appreciable self-absorption of OH line radiation within the nebula. It is probable that the CO emission due to the J = 31→30 rotational transition at 84.411 μm makes a substantial contribution to the observed 84.22 μm flux.

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