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Title:
Observations of interstellar sulfur monoxide
Authors:
Gottlieb, C. A.; Gottlieb, E. W.; Litvak, M. M.; Ball, J. A.; Penfield, H.
Affiliation:
AA(Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass.), AB(Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass.), AC(Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass.), AD(Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass.), AE(Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, Mass.)
Publication:
Astrophysical Journal, Part 1, vol. 219, Jan. 1, 1978, p. 77-94. (ApJ Homepage)
Publication Date:
01/1978
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Emission Spectra, Interstellar Gas, Sulfur Oxides, Abundance, Cosmic Dust, Electron Transitions, H Ii Regions, Interstellar Matter, Sulfur Dioxides
DOI:
10.1086/155757
Bibliographic Code:
1978ApJ...219...77G

Abstract

In the reported investigation involving a number of sources, SO emission features were compared with those of other sulfur-containing species including CS, NS, SiS, OCS, SO2, H2S, and H2CS. The sources considered included molecular clouds associated with H II regions, dust clouds, and Ae and Be stars. Six transitions were observed of SO containing S-32 and two transitions of SO containing S-34. It is pointed out that the transitions of SO containing S-34 observed toward the Kleinmann-Low nebula are about as strong as predicted from the terrestrial S-34/S-32 abundance ratio. The velocity, width, and general source distribution of SO, H2S, and CS emission features are closely correlated (except toward the Kleinmann-Low nebula, where no CS is reported). The predictions of the ion-molecule theory agree well with the observed abundances of NS, OCS, and H2S relative to SO.

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