338 citations · 749 across the 7 of their papers we have counts for
Showing 2002 · astro-phShow all
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astro-ph2002★ 84 cited
The UCSD HIRES/KECK I Damped Lya Abundance Database: IV. Probing Galactic Enrichment Histories with Nitrogen
Jason X. Prochaska, Richard B. C. Henry, John M. O'Meara +5
We present 14 N^0 measurements from our HIRES/Keck database of damped Lya abundances. These data are combined with measurements from the recent and past literature to build an homo…
astro-ph2002★ 58 cited
The UCSD HIRES/KeckI Damped Lya Abundance Database III. An Empirical Study of Photoionization in the Damped Lya System Toward GB1759+7539
Jason X. Prochaska, J. Christopher Howk, John M. O'Meara +5
We investigate the ionization state of the damped Lya system at z=2.62 toward GB1759+7539 through an analysis of ionic ratios sensitive to photoionization: ArI/SII, FeIII/FeII, NII…