1997/12/18 by Scott Burles, Burles, Scott, David Tytler +1
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9712265
11 pages, Kluwer Latex, 4 figures. To appear in the proceedings of the ISSI workshop, "Primordial Nuclei and their Galactic Evolution"
arxiv created 1997/12/20 · arxiv updated 2009/12/01
We present our measurements of the deuterium to hydrogen ratio (D/H) in QSO absorption systems, which give D/H = 3.40 ± 0.25 × 10-5 based on analysis of four independent systems. We discuss the properties of two systems which provide the strongest constraints on D/H. We outline the systematic effects involved in measurements of D/H and introduce a sophisticated method of analysis which properly accounts for these effects.