Highly excited /J = 16 to 15/ rotational transitions of CO, at 162.8 microns, in the Orion cloud

Details Highly excited /J = 16 to 15/ rotational transitions of CO, at 162.8 microns, in the Orion cloud Highly excited /J = 16 to 15/ rotational transitions of CO, at 162.8 microns, in the Orion cloud

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.202p..25s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 202, Feb. 1983, p. 25P-29P.

Astronomy and Astrophysics

Astronomy

11

Carbon Monoxide, Far Infrared Radiation, Hydrogen Clouds, Infrared Spectra, Molecular Clouds, Orion Nebula, Shock Heating, Astronomical Models, Magnetohydrodynamic Waves, Molecular Excitation, Molecular Rotation, Molecular Spectra

Scientific paper

We present the first observations of the J = 16 to J = 15, 162.8 μm transition of CO from an astronomical source. These measurements were carried out on the Kleinmann-Low Nebula. The intensity observed is in good agreement with predictions from previous spectroscopic work carried out in the far-infrared by the University of California, Berkeley group, and by the authors at Cornell. The observation strengthens the previous claim that ≍ 1.5 Msun; of molecular hydrogen is heated to a temperature above 750K within the shocked region in the Nebula. The authors present upper limits to the OH intensity in the F2(2Π1/2) transitions J = 3/2 to J = 1/2 which fall into two groups centred respectively at 163.12 and 163.40 μm.

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