Submillimeter observations of OH and CH in M42

Details Submillimeter observations of OH and CH in M42 Submillimeter observations of OH and CH in M42

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...296..142v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 296, Sept. 1, 1985, p. 142-148.

Other

18

Hydrocarbons, Hydroxyl Emission, Interstellar Gas, Line Spectra, Orion Nebula, Carbon Monoxide, Self Absorption, Submillimeter Waves, Thermal Emission

Scientific paper

The authors have detected the 2Π1/2 J = 3/2→1/2 transitions of OH at 163.12 and 163.40 μm and obtained upper limits for the 2Π3/2 J = 3/2→1/2 transitions of CH at 149.09 and 149.39 μm, in observations of the Kleinmann-Low nebula of Orion. All four flux levels lie between 1 and 1.2×10-17W cm-3. Taken together with existing data on molecular hydrogen and CO and recent data on other OH transitions, the results suggest OH emission from postshock regions at temperatures T ≈ 103K and densities nH2 ≈ 7×106cm-3 and nOH ≈ 80 cm-3. The OH column density is NOH ≈ 4×1016cm-2 in the emitting regions.

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