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Observations of C3H2 (2(12) - 1(01)) toward the Sagittarius A molecular cloudWe have mapped the C3H2 2(12)-1(01) transition line toward the Sgr A molecular cloud on a 1' grid spacing and derived C3H2 column densities of 3 approximately 7 x 10(14) cm-2 for molecular clouds of Sgr A. The fractional abundances of C3H2 relative to H2 are obtained to be 3 approximately 6 x 10(-9), which are slightly lower than that for the cold dark cloud TMC-1 but are enhanced by factors of 5-60 compared to those for Sgr B2 and the Orion extended ridge. We also estimate from the C3H2 column densities total masses of approximately 10(6) M(solar) for two clouds (M - 0.13-0.08 and M - 0.02-0.07), which are thought to be close to the virial equilibrium. We suggest that the large abundance of C3H2 in Sgr A may be partly due to the activities of the Galactic center.
Document ID
20040089693
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Lee, C. W.
(Pusan National University)
Minh, Y. C.
Irvine, W. M.
Date Acquired
August 21, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Ch'onmun Hakhoe chi. The journal of the Korean Astronomical Society. Han'guk Ch'onmun Hakhoe
Volume: 26
ISSN: 0253-3065
Subject Category
Exobiology
Funding Number(s)
CONTRACT_GRANT: NAGW-436
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Exobiology

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