827 citations · 9.1k across the 78 of their papers we have counts for
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An 84 microGauss Magnetic Field in a Galaxy at Redshift z=0.692
Arthur M. Wolfe, Regina A. Jorgenson, Timothy Robishaw +2
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and…
On the (Non)Evolution of HI Disks over Cosmic Time
J. Xavier Prochaska, Arthur M. Wolfe
We present new results on the frequency distribution of projected HI column densities f(N,X), total comoving covering fraction, and integrated mass densities rho_HI of high redshif…
Probing feedback in protogalaxies: Multiphase gas in a DLA at z~2.4
N. Lehner, J. C. Howk, J. X. Prochaska +1
We investigate the physical processes occuring in the multiphase gas of a damped Lyαsystem (DLA). We base our analysis on a high quality Keck HIRES spectrum of the QSO J1211+0422 i…
A Candidate Brightest Proto-Cluster Galaxy at z = 3.03
Jeff Cooke, Elizabeth J. Barton, James S. Bullock +2
We report the discovery of a very bright (m_R = 22.2) Lyman break galaxy at z = 3.03 that appears to be a massive system in a late stage of merging. Deep imaging reveals multiple p…
Bimodality in Damped Lyman alpha Systems
Arthur M. Wolfe, Jason X. Prochaska, Regina A. Jorgenson +1
We report evidence for a bimodality in damped Ly systems (DLAs). Using [C II] 158 mu cooling rates, lc, we find a distribution with peaks at lc=10^-27.4 and 10^-26.6 ergs s^-1 H^-1…
The color excess of quasars with intervening DLA systems- Analysis of the SDSS data release five
Giovanni Vladilo, Jason X. Prochaska, Arthur M. Wolfe
We analyzed the spectroscopic and photometric database of the 5th data release of the Sloan Digital Sky Survey (SDSS) to search for evidence of the quasar reddening produced by dus…
Can gravitational infall energy lead to the observed velocity dispersion in DLAs?
Alexei O. Razoumov, Michael L. Norman, Jason X. Prochaska +3
The median observed velocity width v_90 of low-ionization species in damped Ly-alpha systems is close to 90 km/s, with approximately 10% of all systems showing v_90 > 210 km/s at z…
On the Nature of Velocity Fields in High z Galaxies
Jason X. Prochaska, Hsiao-Wen Chen, Arthur M. Wolfe +2
We analyze the gas kinematics of damped Lya systems (DLAs) hosting high z gamma-ray bursts (GRBs) and those toward quasars (QSO-DLAs) focusing on threestatistics: (1) dv, the veloc…
The Ucsd/Keck Damped Lya Abundance Database: A Decade of High Resolution Spectroscopy
Jason X. Prochaska, Arthur M. Wolfe, J. Christopher Howk +3
We publish the Keck/HIRES and Keck/ESI spectra that we have obtained during the first 10 years of Keck observatory operations. Our full sample includes 42 HIRES spectra and 39 ESI…
Searching for Low Surface-brightness Galaxies in the Hubble Ultra Deep Field: Implications for the Star Formation Efficiency in Neutral Gas at z ~ 3
Arthur M. Wolfe, Hsiao-Wen Chen
(Abridged) The Kennicutt--Schmidt law relates the face-on star formation rate (SFR) per unit area with the face-on gaseous column density in nearby galaxies. Applying this relation…
The Metal-Strong Damped Lyman-alpha Systems
Stéphane Herbert-Fort, Jason X. Prochaska, Miroslava Dessauges-Zavadsky +4
We have identified a metal-strong (logN(Zn+) > 13.15 or logN(Si+) > 15.95) DLA (MSDLA) population from an automated quasar (QSO) absorber search in the Sloan Digital Sky Survey Dat…
Survey for Galaxies Associated with z~3 Damped Lyman alpha Systems II: Galaxy-Absorber Correlation Functions
Jeff Cooke, Arthur M. Wolfe, Eric Gawiser +1
We use 211 galaxy spectra from our survey for Lyman break galaxies (LBGs) associated with 11 damped Lyman alpha systems (DLAs) to measure the three-dimensional LBG auto-correlation…
The UCSD Radio-Selected Quasar Survey for Damped Lyman alpha System
Regina A. Jorgenson, Arthur M. Wolfe, Jason X. Prochaska +5
As large optical quasar surveys for damped Lya become a reality and the study of star forming gas in the early Universe achieves statistical robustness, it is now vital to identify…
Detectability of [CII] 158 micron emission from high-redshift galaxies: predictions for ALMA and SPICA
Kentaro Nagamine, Arthur M. Wolfe, Lars Hernquist
We discuss the detectability of high-redshift galaxies via [CII] 158 micron line emission by coupling an analytic model with cosmological Smoothed Particle Hydrodynamics (SPH) simu…
Measurement of the Spatial Cross-Correlation Function of Damped Lyman Alpha Systems and Lyman Break Galaxies
J. Cooke, A. M. Wolfe, E. Gawiser +1
We present the first spectroscopic measurement of the spatial cross-correlation function between damped Lyman alpha systems (DLAs) and Lyman break galaxies (LBGs). We obtained deep…
Adaptive Mesh Refinement Simulations of the Ionization Structure and Kinematics of Damped Ly Systems with Self-consistent Radiative Transfer
Alexei O. Razoumov, Michael L. Norman, Jason X. Prochaska +1
We use high resolution Eulerian hydrodynamics simulations to study kinematic properties of the low ionization species in damped Ly-alpha systems at redshift z=3. Our adaptive mesh…
Distribution of Damped Lyman-alpha Absorbers in a Lambda Cold Dark Matter Universe
Kentaro Nagamine, Arthur M. Wolfe, Lars Hernquist +1
We present the results of a numerical study of a galactic wind model and its implications on the properties of damped Lyman-alpha absorbers (DLAs) using cosmological hydrodynamic s…
Damped Lyman alpha Systems
Arthur M. Wolfe, Eric Gawiser, Jason X. Prochaska
Observations of damped Lyman alpha systems offer a unique window on the neutral-gas reservoirs that gave rise to galaxies at high redshifts. This review focuses on critical propert…
The SDSS Damped Lya Survey: Data Release 3
Jason X. Prochaska, Stephane Herbert-Fort, Arthur M. Wolfe
We present the results from a damped Lya survey of the Sloan Digital Sky Survey, Data Release 3 based on over 500 new damped Lya systems at z>2.2. We measure the HI column density…
Survey for Galaxies Associated with z~3 Damped Lyman alpha Systems I: Spectroscopic Calibration of u'BVRI Photometric Selection
J. Cooke, A. M. Wolfe, J. X. Prochaska +1
We present a survey for z~3 Lyman break galaxies (LBGs) associated with damped Lyman alpha systems (DLAs) with the primary purpose of determining the DLA-LBG cross-correlation. Thi…
Elemental Abundances in Two High Column Density Damped Lyman Alpha Systems at z < 1.5
Sandhya M. Rao, Jason X. Prochaska, J. Christopher Howk +1
We present Keck/HIRES abundance measurements and metal-line kinematic profiles of the damped Lyman alpha systems (DLAs) towards the quasars Q0933+733 (z_abs=1.479) and Q0948+433 (z…
On the Nature of the Heat Source for Damped Lya Systems
Arthur M. Wolfe, J. Chris Howk, Eric Gawiser +2
We investigate the heat source of the neutral gas comprising DLAs. Unlike the Lya forest, where the extragalactic background radiation field ionizes and heats the gas, we find that…
Cold Neutral Gas in a z=4.2 Damped Lyman-alpha System: The Fuel for Star Formation
J. Christopher Howk, Arthur M. Wolfe, Jason X. Prochaska
We discuss interstellar temperature determinations using the excitation equilibrium of the ^2P levels of Si II and C II. We show how observations of the ^2P_3/2 fine structure leve…
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…