Laboratory and astronomical detection of the deuterated ethynyl radical CCD
Journal Article
·
· Astrophys. J.; (United States)
Two rotational transitions of CCD, N = 1-2 at 144 GHz and 2-3 at 216 GHz, were detected in a laboratory glow discharge through deuterated acetylene and helium, after which one, N = 2-1, was detected toward the rich molecular cloud behind the Orion Nebula. The 144 GHz transition is a well-resolved spin doublet split by 55 MHz, the components of which contain hyperfine structure of the order of 1 MHz, so far only partially resolved. From observations toward two positions in Orion, at and near the Kleinmann-Low nebula, the column density of CCD is determined to be 1.8 x 10 to the 13th/sq cm and the isotopic ratio CCD/CCH = 0.05.CCD was not detected at two positions in TMC-1. 18 references.
- Research Organization:
- Nasa, Goddard Institute for Space Studies, New York; Columbia Univ., NY; ATandT Bell Labs., Holmdel, NJ
- OSTI ID:
- 5525170
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 296; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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