Abstract
Radio emission spectra of the J = 1−0 ground state transition of H 12C 14N has been detected in comet Kohoutek (1973f) before and after perihelion passage. The HCN gas production rate is about 10 28 molecules sec −1 at a heliocentric distance of ∼0.4 AU. Multiple Doppler shifts in the observed spectrum suggest jets with velocities ranging up to several km sec −1.
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