Observations of the 3(1,3)-2(0,2) transition of SO2

Details Observations of the 3(1,3)-2(0,2) transition of SO2 Observations of the 3(1,3)-2(0,2) transition of SO2

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.203..661w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 203, May 1983, p. 661-666.

Astronomy and Astrophysics

Astronomy

1

Interstellar Chemistry, Molecular Clouds, Sulfur Dioxides, Abundance, Emission Spectra, Line Spectra, Molecular Spectra

Scientific paper

The authors 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.

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