Detection of Deuterated cyanoacetylene in the interstellar cloud TMC 1

Journal Article · Fri Aug 01 04:00:00 EDT 1980 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183307· OSTI ID:6757522

Langer, W D; Schloerb, F P; Snell, R L; Young, J S

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 DC/sub 3/N with HC/sub 3/N implies that the abundance ratio DC/sub 3/N/HC/sub 3/N is larger than that observed for DCO/sup +//HCO/sup +/. This larger enhancement of deuterium indicates that HC/sub 3/N in this cloud is formed by gasphase ion-molecule reactions rather than by catalysis on grain surfaces or the dissociation of even longer molecules formed in stellar atmospheres.

• Research Organization: Department of Physics and Astronomy, University of Massachusetts, Amherst
• OSTI ID: 6757522
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 239:3; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
CHEMICAL REACTIONS
CHEMISTRY
COLLISIONS
COSMOCHEMISTRY
DEUTERIUM COMPOUNDS
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
HYDROGEN COMPOUNDS
INTERSTELLAR GRAINS
INTERSTELLAR SPACE
ION COLLISIONS
ION-MOLECULE COLLISIONS
MOLECULE COLLISIONS
MOLECULES
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARTICLES
PROPIOLONITRILE
RADIATIONS
RADIOWAVE RADIATION
SPACE
SPECTRA