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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1604
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dc.contributor.authorGardner, F.F.-
dc.contributor.authorHoglund, B.-
dc.contributor.authorShukre, C.S.-
dc.contributor.authorStark, A.A.-
dc.contributor.authorWilson, T.L.-
dc.date.accessioned2006-12-19T11:03:54Z-
dc.date.available2006-12-19T11:03:54Z-
dc.date.issued1985-05-
dc.identifier.citationAstronomy and Astrophysics, 1985, Vol.146, p303-306en
dc.identifier.issn0004-6361-
dc.identifier.urihttp://hdl.handle.net/2289/1605-
dc.description.abstractIn the present observational study of the 3(12) - 2(11) and 3(13) - 2(12) transitions of ortho-H2CS and the 3(03) - 2(02) transitions of para-H2CS, the most precise results, for a beamwidth of 1.8 arcmin, were the para- and ortho- line ratios of 0.51 + or - 0.04 for Orion and 0.44 + or - 0.05 for DR 21 (OH). The ortho/para ratios are close to the values of about 0.56 derived from a large velocity gradient analysis employing the densities, kinetic temperatures and collision rates appropriate to H2CO cloud molecules, assuming a true para/ortho abundance ratio of 1:3. Revised estimates of the rest frequencies of the various formaldehyde lines observed are given.en
dc.format.extent680161 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherSpringer-Verlagen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?1985A&A...146..303Gen
dc.rights(1985) by the European Southern Observatory. Scanned images provided by the NASA ADS.en
dc.subjectABUNDANCEen
dc.subjectASTRONOMICAL SPECTROSCOPYen
dc.subjectFORMALDEHYDEen
dc.subjectINTERSTELLAR MATTERen
dc.subjectLINE SPECTRAen
dc.subjectMOLECULAR CLOUDSen
dc.subjectGAS DENSITYen
dc.subjectMOLECULAR COLLISIONSen
dc.subjectORION NEBULAen
dc.subjectVELOCITY DISTRIBUTIONen
dc.titleObservations of ortho- and para-thioformaldehydeen
dc.typeArticleen
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