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Observations of the 31,3-20,2 transition of SO2

White, Glenn J. and Phillips, J. P. (1983). Observations of the 31,3-20,2 transition of SO2. Monthly Notices of the Royal Astronomical Society, 203 pp. 661–666.

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We have measured the 31,3-20,2 transition of SO2 in W49, W51, OriA and Sgr B2, and found SO2 emission upper limits in a further seven sources. The total number of SO2 molecules in individual clouds is found to range from ~2×1051 to ~1053, implying a relative abundance X(SO2) ~ 10-6 in OriA, and lower limits varying from X(SO2) ~ 10-9 to ~10-8 in the remaining sources. These results are briefly discussed within the context of current models of interstellar cloud chemistry.

Item Type: Journal Article
Copyright Holders: 1983 Royal Astronomical Society
ISSN: 1365-2966
Keywords: interstellar chemistry; molecular clouds; sulfur dioxides; abundance; emission spectra; line spectra; molecular spectra
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 33783
Depositing User: G. J. White
Date Deposited: 07 Jun 2012 09:49
Last Modified: 26 Feb 2016 02:50
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