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Submillimetre observations of atomic carbonEmission from the ground state fine structure transition of atomic carbon at 610 microns has been observed in Galactic sources. From comparison of the observations with CO emission, it can be deduced that the abundance of neutral carbon relative to CO is high (approximately 0.1-3). The spatial and velocity distribution of CI and CO are often very similar. If molecular clouds are older than 1 x 10 to the 6th power years, the observations necessitate a mechanism which can maintain a high abundance of neutral carbon in cloud material, either by hindering complete conversion of C into CO or by physically and chemically rejuvenating the material.
Document ID
19830013771
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Phillips, T. G.
(California Inst. of Tech. Pasadena, CA, United States)
Keene, J.
(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
Astronomy
Accession Number
83N22042
Funding Number(s)
CONTRACT_GRANT: NAG2-1
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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