N Lehner, JC Howk, JX Prochaska, KL Cooksey… - Astrophysical …, 2009 - inis.iaea.org
[en] With a column density log N (O VI)= 14.95±0.05, the O VI absorber at z abs≅ 0.2028
observed toward the quasi-stellar object PKS 0312-77 (z em= 0.223) is the strongest yet …