Detection of interstellar CCD
1985; EDP Sciences; Volume: 147; Issue: 2 Linguagem: Inglês
ISSN
1432-0746
AutoresF. Combes, F. Boulanger, P. Encrenaz, Maryvonne Gérin, M. Bogey, C. Demuynck, J. L. Destombes,
Tópico(s)Stellar, planetary, and galactic studies
ResumoThe 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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