Observations of OCS and a search for OC3S in the interstellar medium

Details Observations of OCS and a search for OC3S in the interstellar medium Observations of OCS and a search for OC3S in the interstellar medium

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...315..646m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 315, April 15, 1987, p. 646-653.

Astronomy and Astrophysics

Astrophysics

15

Astronomical Spectroscopy, Carbonyl Compounds, Cosmic Dust, Microwave Spectra, Molecular Clouds, Sulfides, Abundance, Interstellar Space

Scientific paper

Observations of OCS and a search for OC3S are reported, with particular reference to cold dust clouds. OCS has been detected for the first time in dark clouds with a mean fractional abundance relative to hydrogen of ≡3×10-9; this is ≡4 times greater than that observed for giant molecular clouds. This result is discussed in the context of molecule formation mechanisms. Observations of the J = 1→0 transition of OCS indicate that this transition is amplifying the background continuum radiation in the direction of Sgr B2.

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