Connecting the primordial and Galactic deuterium abundances

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dc.creatorSteigman, Gary
dc.creatorRomano, Donatella
dc.creatorTosi, Monica
dc.date2007-03-27
dc.date.accessioned2026-07-07T11:01:15Z
dc.date.available2026-07-07T11:01:15Z
dc.descriptionThe deuterium abundances inferred from observations of the interstellar medium within 1-2 kpc of the Sun range over a factor of three and the corresponding oxygen abundances show an even larger dispersion. While the lower D (and O) abundances likely result from depletion onto dust, the higher D abundances are consistent with the BBN-predicted primordial D abundance and chemical evolution models of the Galaxy with infall of primordial or nearly primordial material. The large ranges in deuterium and oxygen abundances suggest that the effects of depletion and/or infall have not been homogenized in the local interstellar medium.
dc.description5 pages, 4 figures; accepted for publication in MNRAS
dc.identifierhttps://arxiv.org/abs/astro-ph/0703682
dc.identifierhttp://arxiv.org/abs/astro-ph/0703682
dc.identifierMon.Not.Roy.Astron.Soc.378:576-580,2007
dc.identifierdoi:10.1111/j.1365-2966.2007.11780.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187899
dc.subjectAstrophysics
dc.titleConnecting the primordial and Galactic deuterium abundances
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