NASA NTRS · 19850059225
Detection of interstellar CCD
Abstract
The first detection of interstellar CCD has been obtained in the N = 3-2, J = 7/2-5/2 line at 216.3732 GHz towards the Kleinman-Low nebula. An abundance ratio CCD/CCH of 0.045 is found, indicating in this molecule a deuterium enhancement similar to that found for HNC, but an order of magnitude higher than for HCN. Negative results towards DR 21(OH), NGC 2264, L 134N, TM Cl, Rho OphB2, and IRC 10216 rule out a stronger D enhancement for CCD than for other deuterated molecules in these sources. Predictions of currently developed ion-molecule reaction schemes are consistent with the CCD line detected and the negative results.
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Combes, F., Boulanger, F., Encrenaz, P. J., Gerin, M., Bogey, M.. 1985-06-01. Detection of interstellar CCD. https://ntrs.nasa.gov/citations/19850059225
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