Document Detail


Submillimeter heterodyne detection of interstellar carbon monoxide at 434 micrometers.
MedLine Citation:
PMID:  17840958     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
A submillimeter heterodyne radiometer, developed for astronomical applications, uses an optically pumped laser local oscillator and a quasi-optical Schottky diode mixer. The resultant telescope-mounted system, which has a noise temperature less than 4000 K (double sideband) and high frequency and spatial resolution, has been used to detect the J = 6 --> 5 rotational transition of carbon monoxide at 434 micrometers in the Orion molecular cloud. The measurements, when compared with previous millimeter-wave data, indicate that the broad carbon monoxide emission feature is produced by an optically thin gas whose temperature exceeds 180 K.
Authors:
H R Fetterman; G A Koepf; P F Goldsmith; B J Clifton; D Buhl; N R Erickson; D D Peck; N McAvoy; P E Tannenwald
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  211     ISSN:  0036-8075     ISO Abbreviation:  Science     Publication Date:  1981 Feb 
Date Detail:
Created Date:  2010-06-08     Completed Date:  2010-07-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  580-2     Citation Subset:  -    
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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