Detection of the 2/1,1/ - 2/1,2/ rotational emission line of HDO in the Orion Molecular Cloud
The 2(1,1) - 2(1,2) rotational transition of HDO has been detected towards the KL position at the center of the OMC-1 at a velocity of +5.5(+ or - 1.3)km/s, corresponding to emission from the central core. This measurement is combined with previous estimates of the H2O abundance close to KL to obtain a ratio of the concentration of HDO to that of
Beckman, J. E. et al.
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1982