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Water as a probe of star-forming regionsPreliminary calculations employing statistical equilibrium techniques were carried out to determine brightness temperatures of water transitions occurring in the submillimeter band. The interesting candidates appear to be the 325 GHz, 380 GHz, and 448 GHz transitions, they are compared with the 183 GHz and 380 GHz transitions observed in the Orion Kleinmann-Low nebula and the combined results seem to be consistent with H2 densities of 100,000 -1 million cm-3 and a water column density of approximately 10 to 18th power. This implies a relative abundance of approximately 0.00001 which means that water may be about one twentieth of CO. In addition, it was found that for the conditions of the Orion plateau source, the 448 GHz line is expected to be a mild maser.
Document ID
19830013787
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rodriguez-Kuiper, E. N.
(Bell Aerospace Systems Div. Huntington Beach, Calif., United States)
Kuiper, T. B. H.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 11, 2013
Publication Date
August 1, 1982
Publication Information
Publication: ESA The Sci. Importance of Submillimetre Observations
Subject Category
Astrophysics
Accession Number
83N22058
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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