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First detection of triply-deuterated methanol

hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorPARISE, B.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorCASTETS, Alain
hal.structure.identifierThe Ohio State University [Columbus] [OSU]
dc.contributor.authorHERBST, E.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
dc.contributor.authorCAUX, E.
hal.structure.identifierLaboratoire d'Astrophysique de Grenoble [LAOG]
dc.contributor.authorCECCARELLI, C.
hal.structure.identifierDakota State University [Dakota State University]
dc.contributor.authorMUKHOPADHYAY, I.
hal.structure.identifierSRON Netherlands Institute for Space Research [SRON]
dc.contributor.authorTIELENS, A.G.G.M.
dc.date.issued2004
dc.identifier.issn0004-6361
dc.description.abstractEnWe report the first detection of triply-deuterated methanol, with 12 observed transitions, towards the low-mass protostar IRAS 16293-2422, as well asmultifrequency observations of 13CH3OH, used to derive the column density of the main isotopomer CH3OH.The derived fractionation ratio [CD3OH]/[CH3OH] averaged on a 10'' beam is 1.4%. Together with previous CH2DOH and CHD2OH observations, the present CD3OH observations are consistent with a formation of methanol on grain surfaces, if the atomic D/H ratio is 0.1 to 0.3 in the accreting gas. Such a high atomic ratio can be reached in the frame of gas-phase chemical models including all deuterated isotopomers of H3+.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enDeuterated molecules
dc.subject.enprotostars
dc.subject.enIRAS 16293-2422
dc.subject.enmethanol
dc.subject.enCD3OH
dc.title.enFirst detection of triply-deuterated methanol
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361:20034490
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
dc.identifier.arxivastro-ph/0311038
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.page159-163
bordeaux.volume416
bordeaux.peerReviewedoui
hal.identifierhal-00000808
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00000808v1
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