Microwave search for molecules in Comet Kohoutek

Abstract

WE report here a molecular radio line search in Comet Kohoutek using the 108–116 GHz spectral line receiver on the NRAO 36-foot telescope during January 14–18, 1974. We discuss some of the reasons for the negative results obtained in our search for transitions of methyl cyanide, cyanogen, cyanoacetylene, propynal and formic acid (all good ‘parent’ molecules for the diatomics and radicals known in the optical spectra of comets).