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Title:
Radio detection of interstellar sulfur dioxide
Authors:
Snyder, L. E.; Hollis, J. M.; Ulich, B. L.; Lovas, F. J.; Johnson, D. R.; Buhl, D.
Affiliation:
AA(Virginia, University, Charlottesville, Va.), AB(Virginia, University, Charlottesville, Va.), AC(National Radio Astronomy Observatory, Tucscon, Ariz.), AD(National Bureau of Standards, Optical Physics Div., Washington, D.C.), AE(National Bureau of Standards, Optical Physics Div., Washington, D.C.), AF(NASA, Goddard Space Flight Center, Astrochemistry Branch, Greenbelt, Md.)
Publication:
Astrophysical Journal, vol. 198, June 1, 1975, pt. 2, p. L81-L84. (ApJL Homepage)
Publication Date:
06/1975
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
EMISSION SPECTRA, INTERSTELLAR GAS, MOLECULAR SPECTRA, RADIO ASTRONOMY, SULFUR OXIDES, GROUND STATE, HYDROGEN CLOUDS, MASERS, MOLECULAR ROTATION, NEBULAE
Comment:
A&AA ID. AAA013.131.119
DOI:
10.1086/181817
Bibliographic Code:
1975ApJ...198L..81S

Abstract

Interstellar sulfur dioxide (SO2) has been detected in emission from the direction of the Orion Nebula molecular cloud and from Sgr B2. SO2 is the heaviest interstellar molecule detected to date, and the only nonlinear triatomic molecule which does not contain hydrogen. The remarkable Orion emission profiles suggest that two components are supporting the SO2 emission: a dense circumstellar-type envelope, which may be in maser emission, and a warm galactic cloud component.

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