A High Deuterium Abundance at z=0.7; Evidence for Cosmic Inhomogeneity?

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dc.creatorWebb, J. K.
dc.creatorCarswell, R. F.
dc.creatorLanzetta, K. M.
dc.creatorFerlet, R.
dc.creatorLemoine, M.
dc.creatorVidal-Madjar, A.
dc.date1997-10-09
dc.date.accessioned2026-07-07T02:24:28Z
dc.date.available2026-07-07T02:24:28Z
dc.descriptionRecent HST/GHRS observations of the z = 0.7010 absorber toward the QSO 1718+4807 (selected because of apparently ideal characteristics for measuring D/H) yield a D/H significantly higher D/H than some recent high-redshift measurements. Our analysis indicates D/H}= 1.8 - 2.5 x 10^{-4}. This may indicate a cosmological inhomogeneity in the deuterium abundance of at least a factor of ten.
dc.descriptionLatex/conf_iap.sty/10pt.sty, 6 pages, 2 figs. To appear in Proc. of the 13th IAP Colloquium: Structure and Evolution of the IGM from QSO Absorption Line Systems, eds. P. Petitjean & S. Charlot, Nouvelles Frontieres, Paris
dc.identifierhttps://arxiv.org/abs/astro-ph/9710089
dc.identifierhttp://arxiv.org/abs/astro-ph/9710089
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/11625
dc.subjectAstrophysics
dc.titleA High Deuterium Abundance at z=0.7; Evidence for Cosmic Inhomogeneity?
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