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Molecular abundances in the Sagittarius A molecular cloudWe have obtained column densities for HCO(+), HCO, HCS(+), C3H2, HC5N, SiO, OCS, HCOOH, CH3CH2OH, and CH3CCH toward Sgr A. The fractional abundance of SiO relative to molecular hydrogen in Sgr A is comparable to that for the Orion plateau, about 10 exp-7 to 10 exp -8, which may be a typical value for hot clouds. The abundances of HCO, CH3CH2OH, and CH3CCH all appear to be enhanced relative to other molecular clouds such as Sgr B2.
Document ID
19930059194
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Minh, Y. C.
(Korea Astronomy Observatory Taejon, Republic Of Korea)
Irvine, W. M.
(Five College Astronomy Observatory Amherst, MA, United States)
Friberg, P.
(Onsala Space Observatory, Onsala, Sweden; Joint Astronomy Centre Hilo, Hawaii, United States)
Date Acquired
August 16, 2013
Publication Date
May 1, 1992
Publication Information
Publication: Astronomy and Astrophysics
Volume: 258
Issue: 2
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
93A43191
Funding Number(s)
CONTRACT_GRANT: NSF INT-85-12284
CONTRACT_GRANT: NAGW-436
Distribution Limits
Public
Copyright
Other

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