Detection of interstellar CCD

Details Detection of interstellar CCD Detection of interstellar CCD

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...147l..25c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 147, no. 2, June 1985, p. L25, L26.

Astronomy and Astrophysics

Astrophysics

24

Deuterium Compounds, Hydrocarbons, Interstellar Chemistry, Interstellar Matter, Abundance, Millimeter Waves, Nebulae

Scientific paper

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.

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