Abstract
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 M⊙ of molecular hydrogen is heated to a temperature above 750 K within the shocked region in the Nebula. We 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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More From: Monthly Notices of the Royal Astronomical Society
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