On the measurements of D/H in QSO absorption systems

被引：35
作者：
Burles, S
Tytler, D
机构：
[1] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA
[2] Univ Calif San Diego, Ctr Astron & Astrophys, La Jolla, CA 92093 USA
来源：
SPACE SCIENCE REVIEWS | 1998年 / 84卷 / 1-2期
关键词：
cosmology : nucleosynthesis; abundances; quasars : absorption lines;
D O I：
10.1023/A:1005086310712
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present our measurements of the deuterium to hydrogen ratio (D/H) in QSO absorption systems, which give D/H = 3.40 +/- 0.25 x 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.
引用
收藏
页码：65 / 75
页数：11
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