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Detection of circumstellar gas associated with GG TauriDouble-peaked (C-12)O (1-0) emission centered on the young T Tauri star GG Tau possesses a line profile which may be modeled on the assumption that CO emission arises in an extended circumstellar disk. While bounds on the observed gas mass can be estimated on this basis, it is suggested that a large amount of mass could lie within a small and optically thick region, escaping detection due to beam-dilution effects. In addition, CO may no longer accurately trace the gas mass due to its dissociation, or freezing into grains, or due to the locking-up of carbon into more complex molecules.
Document ID
19930053267
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Skrutskie, M. F.
(NASA Headquarters Washington, DC United States)
Snell, R. L.
(NASA Headquarters Washington, DC United States)
Strom, K. M.
(NASA Headquarters Washington, DC United States)
Strom, S. E.
(NASA Headquarters Washington, DC United States)
Edwards, S.
(Massachusetts Univ. Amherst, United States)
Fukui, Y.
(NASA Headquarters Washington, DC United States)
Mizuno, A.
(Nagoya Univ. Japan)
Hayashi, M.
(Tokyo Univ. Japan)
Ohashi, N.
(Nobeyama Radio Observatory Minamimaki, Japan)
Date Acquired
August 16, 2013
Publication Date
May 20, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 409
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A37264
Distribution Limits
Public
Copyright
Other

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