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. The authors found an abundance ratio CCD/CCH of 4.5×10-2, 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 DR21(OH), NGC 2264, L134N, TMC-1, ρ Oph B2 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 negative results.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- June 1985
- Bibcode:
- 1985A&A...147L..25C
- Keywords:
-
- Deuterium Compounds;
- Hydrocarbons;
- Interstellar Chemistry;
- Interstellar Matter;
- Abundance;
- Millimeter Waves;
- Nebulae;
- Astrophysics