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Uncertainties in the Determination of Primordial D/H | | Antoinette Songaila
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30 Sep 1997 | | Journal: | ``Structure and Evolution of the Intergalactic Medium from QSO Absorption Line Systems’’ eds. P. Petitjean and S. Charlot (Editions Frontieres, Paris, 1997), 339-344 | | Subject: | astro-ph | | Affiliation: | University of Hawaii, Institute for Astronomy | | Abstract: | The current status of high redshift D/H measurements is discussed. I first examine whether the observations of HS1937-1009 require a low value of D/H. It is shown that the LRIS measurements of the continuum break and the high resolution Lyman series data can easily be modelled with D/H in the range 5 x 10^(-5) to 10^(-4). I then discuss measurements on weaker Lyman limit systems. A statistical treatment of 10 partial Lyman limit systems favors D/H between 5 x 10^(-5) and 2 x 10^(-4). | | Source: | arXiv, astro-ph/9709293 | | Services: | Forum | Review | PDF | Favorites | |
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