Detection of deuterated cyanoacetylene in the interstellar cloud TMC 1
Abstract
Deuterated cyanoacetylene has been observed for the first time in an interstellar cloud, TMC 1, by the detection of emission from its J = 5-4 transition at 42.2 GHz. Comparison of DC3N with HC3N implies that the abundance ratio DC3N/HC3N is larger than that observed for DCO(+)/HCO(+). This larger enhancement of deuterium indicates that HC3N in this cloud is formed by gas-phase ion-molecule reactions rather than by catalysis on grain surfaces or the dissociation of even longer molecules formed in stellar atmospheres.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 1980
- DOI:
- 10.1086/183307
- Bibcode:
- 1980ApJ...239L.125L
- Keywords:
-
- Acetylene;
- Cyano Compounds;
- Deuterium;
- Interstellar Chemistry;
- Interstellar Gas;
- Abundance;
- Chemical Composition;
- Cyanoacetylene;
- Emission Spectra;
- Interstellar Space;
- Stellar Atmospheres;
- Astrophysics