827 citations · 9.1k across the 78 of their papers we have counts for
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Constraining Variations in the Fine-structure Constant, Quark Masses and the Strong Interaction
M. T. Murphy, V. V. Flambaum, J. K. Webb +3
We present evidence for variations in the fine-structure constant from Keck/HIRES spectra of 143 quasar absorption systems over the redshift range 0.2 < z_abs < 4.2. This includes…
The Age-Metallicity Relation of the Universe in Neutral Gas: The First 100 Damped Lya Systems
Jason X. Prochaska, Eric Gawiser, Arthur M. Wolfe +2
We present accurate metallicity measurements for 121 damped Lya systems at 0.5<z<5 including ~50 new measurements from our recently published Echellette Spectrograph and Imager sur…
The ESI/KeckII Damped Lya Abundance Database
Jason X. Prochaska, Eric Gawiser, Arthur M. Wolfe +2
This paper presents chemical abundance measurements for 37 damped Lya systems at z>2.5 observed with the Echellette Spectrograph and Imager on the KeckII telescope. We measure the…
The elemental abundance pattern in a galaxy at z=2.626
Jason X. Prochaska, J. Chris Howk, Arthur M. Wolfe
The discovery of metal-poor stars (where metal is any element more massive than helium) has enabled astronomers to probe the chemical enrichment history of the Milky Way. More rece…
CII* Absorption in Damped Lyman Alpha Systems: (II) A New Window on the Star Formation History of the Universe
Arthur M. Wolfe, Eric Gawiser, Jason X. Prochaska
Starting from the SFR per unit physical area, determined for DLAs using the C II* method, we obtain the SFR per unit comoving volume at 3, and find that it agrees wit…
CII* Absorption in Damped Lyman Alpha Systems: (I) Star Formation Rates in a Two-Phase Medium
Arthur M. Wolfe, Jason X. Prochaska, Eric Gawiser
We describe a technique that for the first time measures star formation rates (SFRs) in damped Lyman alpha systems(DLAs) directly. We assume that massive stars form in DLAs, and th…