Observations of OCS and a search for OC3S in the interstellar medium
| Autor: | N. W. Broten, Henry E. Matthews, J. M. MacLeod, Per Friberg, S. C. Madden |
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| Rok vydání: | 1987 |
| Předmět: |
Cosmic Dust
Hydrogen Extraterrestrial Environment Astronomy Sulfur Oxides chemistry.chemical_element Context (language use) Astrophysics Sulfides Astronomical spectroscopy Spectral line Cosmochemistry Cosmic dust Physics Molecular cloud Spectrum Analysis Astronomical Phenomena Astronomy and Astrophysics Carbon Hydrocarbons Interstellar medium Oxygen chemistry Space and Planetary Science Gases Sulfur |
| Zdroj: | The Astrophysical journal. 315(2) |
| ISSN: | 0004-637X |
| Popis: | 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 about 3 x 10 to the -9th; this is about four 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. 26 references. |
| Databáze: | OpenAIRE |
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