390 citations · 713 across the 11 of their papers we have counts for
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Direct Constraints on the Extremely Metal-Poor Massive Stars Underlying Nebular C IV Emission from Ultra-Deep HST/COS Ultraviolet Spectroscopy
Peter Senchyna, Daniel P. Stark, Stephane Charlot +8
Metal-poor nearby galaxies hosting massive stars have a fundamental role to play in our understanding of both high-redshift galaxies and low metallicity stellar populations. But wh…
The Cosmic Ultraviolet Baryon Survey (CUBS) IV: The Complex Multiphase Circumgalactic Medium as Revealed by Partial Lyman Limit Systems
Thomas J. Cooper, Gwen C. Rudie, Hsiao-Wen Chen +18
We present a detailed study of two partial Lyman limit systems (pLLSs) of neutral hydrogen column density discovered at…
Interstellar and Circumgalactic Properties of an Unseen Galaxy: Abundances, Ionization, and Heating in the Earliest Known Quasar Absorber
Robert A. Simcoe, Masafusa Onoue, Anna-Christina Eilers +5
We analyze relative abundances and ionization conditions in a strong absorption system at z=6.84, seen in the spectrum of the z=7.54 background quasar ULAS J134208.10+092838.61. Si…
The Cosmic Ultraviolet Baryon Survey (CUBS) II: Discovery of an H-Bearing DLA in the Vicinity of an Early-Type Galaxy at z = 0.576
Erin Boettcher, Hsiao-Wen Chen, Fakhri S. Zahedy +18
We report the serendipitous detection of an H-bearing damped Lyman- absorber at z = 0.576 in the spectrum of the QSO J0111-0316 in the Cosmic Ultraviolet Baryon Survey. Sp…
COS Observations of the Cosmic Web: A Search for the Cooler Components of a Hot, X-ray Identified Filament
Thomas Connor, Fakhri S. Zahedy, Hsiao-Wen Chen +3
In the local universe, a large fraction of the baryon content is believed to exist as diffuse gas in filaments. While this gas is directly observable in X-ray emission around clust…
A metal-poor damped Ly-alpha system at redshift 6.4
Eduardo Banados, Michael Rauch, Roberto Decarli +9
We identify a strong Ly-alpha damping wing profile in the spectrum of the quasar P183+05 at z=6.4386. Given the detection of several narrow metal absorption lines at z=6.40392, the…
Heavy Element Absorption Systems at : Metal-Poor Neutral Gas and a Diminishing Signature of Highly Ionized Circumgalactic Matter
T. J. Cooper, R. A. Simcoe, K. L. Cooksey +5
Ratios of different ions of the same element encode ionization information independently from relative abundances in quasar absorption line systems, crucial for understanding the m…
The Pan-STARRS1 distant z>5.6 quasar survey: more than 100 quasars within the first Gyr of the universe
E. Bañados, B. P. Venemans, R. Decarli +33
Luminous quasars at z>5.6 can be studied in detail with the current generation of telescopes and provide us with unique information on the first gigayear of the universe. Thus far…
Predominantly Low Metallicities Measured in a Stratified Sample of Lyman Limit Systems at z=3.7
Ana Glidden, Thomas J. Cooper, Kathy L. Cooksey +2
We measured metallicities for 33 z=3.4-4.2 absorption line systems drawn from a sample of H I-selected-Lyman limit systems (LLSs) identified in Sloan Digital Sky Survey (SDSS) quas…
The Incidence of Low-Metallicity Lyman-Limit Systems at z~3.5: Implications for the Cold-Flow Hypothesis of Baryonic Accretion
Thomas J. Cooper, Robert A. Simcoe, Kathy L. Cooksey +2
Cold accretion is a primary growth mechanism of simulated galaxies, yet observational evidence of "cold flows" at redshifts where they should be most efficient (-4) is scarce.…