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The kinetic temperature in the interior of the Xi Ophiuchi cloud from Copernicus observations of interstellar C2Satellite observations of transitions of C2 at 2312 Angstroms in the spectrum of Xi Ophiuchi were carried out to evaluate the kinetic temperature of the interior cloud. A column density of 1.22 x 10 to the 12th per sq cm is derived from an absorption feature at the 4 sigma level of significance at the position of the R(0) line. This would imply a rotational temperature of not more than 22 K, with a more probable value of less than 16 K. Since total column density (3.2 x 10 to the 12th per sq cm) is found to be lower by a factor of approximately 4 than that which had been previously reported, substantial photo-dissociation of C2 is assumed.
Document ID
19780044087
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Snow, T. P., Jr.
(Princeton University New Observatory, Princeton, N.J.; Colorado, University, Boulder, Colo., United States)
Date Acquired
August 9, 2013
Publication Date
March 15, 1978
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
78A27996
Funding Number(s)
CONTRACT_GRANT: NAS5-23476
Distribution Limits
Public
Copyright
Other

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