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Title:
Interstellar methyl mercaptan
Authors:
Linke, R. A.; Frerking, M. A.; Thaddeus, P.
Affiliation:
AA(Bell Telephone Laboratories, Inc., Holmdel, N.J.), AB(Bell Telephone Laboratories, Inc., Holmdel, N.J.), AC(NASA, Goddard Institute for Space Studies, New York, N.Y.)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 234, Dec. 1, 1979, p. L139-L142. (ApJL Homepage)
Publication Date:
12/1979
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Astronomical Spectroscopy, Interstellar Gas, Interstellar Matter, Methyl Compounds, Thiols, Frequency Response, Gas Density, Millimeter Waves, Molecular Rotation
DOI:
10.1086/183125
Bibliographic Code:
1979ApJ...234L.139L

Abstract

Methyl mercaptan (CH3SH) has been identified in Sgr B2 from observations of six lines in its millimeter-wave spectrum. The CH3SH rotational temperature and column density in Sgr B2 are T(rot) = 9 plus or minus 3 K and N = 1.5 plus or minus 0.2 x 10 to the 14th per sq cm, respectively. The CH3SH/CH3OH ratio is apparently not greatly different from the cosmic S/O ratio.

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