Radio observations of interstellar CN toward diffuse clouds, dark clouds, black clouds, and circumstellar clouds. [113 GHz]
Emission at 113 GHz from the CN molecule was sought in a large number of interstellar regions, primarily dark dust clouds. Lines were detected in four dark clouds, the first time CN was observed in this type of object. Comparative CO observations were also performed. The CN/CO abundance ratio varies from cloud to cloud, even among objects which are apparently otherwise similar. This variation suggests that the chemistry of dark clouds may be time-dependent. A previously reported detection of CN emission from a diffuse cloud was not confirmed. Several black clouds and circumstellar clouds were reobserved to obtain better line parameters and to serve as comparative interstellar chemical systems. 2 figures, 6 tables.
- Research Organization:
- Owens Valley Radio Observatory, Pasadena, CA
- OSTI ID:
- 6208066
- Journal Information:
- Astrophys. J.; (United States), Vol. 225:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
CARBON MONOXIDE
COSMOCHEMISTRY
COSMIC DUST
COSMIC RADIO SOURCES
COSMIC GASES
ABUNDANCE
CYANOGEN
CHEMICAL REACTIONS
GHZ RANGE 100-1000
RADICALS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMISTRY
DUSTS
FLUIDS
FREQUENCY RANGE
GASES
GHZ RANGE
OXIDES
OXYGEN COMPOUNDS
640105* - Astrophysics & Cosmology- Galaxies
640103 - Astrophysics & Cosmology- Quasi-Stellar
Radio
& X-Ray Sources- (-1987)