First detection of triply-deuterated methanol

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dc.creatorParise, B.
dc.creatorCastets, A.
dc.creatorHerbst, E.
dc.creatorCaux, E.
dc.creatorCeccarelli, C.
dc.creatorMukhopadhyay, I.
dc.creatorTielens, A. G. G. M.
dc.date2003-11-03
dc.date.accessioned2026-07-07T06:28:38Z
dc.date.available2026-07-07T06:28:38Z
dc.descriptionWe report the first detection of triply-deuterated methanol, with 12 observed transitions, towards the low-mass protostar IRAS 16293-2422, as well as multifrequency 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.descriptionAccepted by A&A
dc.identifierhttps://arxiv.org/abs/astro-ph/0311038
dc.identifierhttp://arxiv.org/abs/astro-ph/0311038
dc.identifierAstronomy and Astrophysics 416 (2004) 159-163
dc.identifierdoi:10.1051/0004-6361:20034490
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/97761
dc.subjectAstrophysics
dc.titleFirst detection of triply-deuterated methanol
dc.typetext

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