182 citations · 576 across the 6 of their papers we have counts for
6 papers
A downturn in intergalactic CIV as redshift 6 is approached
Emma V. Ryan-Weber, Max Pettini, Piero Madau +1
We present the results of the largest survey to date for intergalactic metals at redshifts z > 5, using near-IR spectra of nine QSOs with emission redshifts z(em) > 5.7. We find, f…
Dust depletion, chemical uniformity and environment of CaII H&K quasar absorbers
Berkeley J. Zych, Michael T. Murphy, Paul C. Hewett +1
CaII 3934,3969 absorbers, which are likely to be a subset of damped Lyman alpha systems, are the most dusty quasar absorbers known, with an order of magnitude more extinction in E(…
Deuterium Abundance in the Most Metal-Poor Damped Lyman alpha System: Converging on Omega_baryons
Max Pettini, Berkeley J. Zych, Michael T. Murphy +2
The most metal-poor DLA known to date, at z = 2.61843 in the spectrum of the QSO Q0913+072, with an oxygen abundance only about 1/250 of the solar value, shows six well resolved D…
C, N, O Abundances in the Most Metal-Poor Damped Lyman alpha Systems
Max Pettini, Berkeley J. Zych, Charles C. Steidel +1
This study focuses on some of the most metal-poor damped Lyman alpha absorbers known in the spectra of high redshift QSOs, using new and archival observations obtained with UV-sens…
Diffuse Interstellar Bands in z < 0.6 CaII Absorbers
Sara L. Ellison, Brian A. York, Michael T. Murphy +3
The diffuse interstellar bands (DIBs) probably arise from complex organic molecules whose strength in local galaxies correlates with neutral hydrogen column density, N(HI), and dus…
The host galaxies of strong CaII QSO absorption systems at z<0.5
Berkeley J. Zych, Michael T. Murphy, Max Pettini +3
We present new imaging and spectroscopic observations of the fields of five QSOs with very strong intervening CaII absorption systems at redshifts z<0.5 selected from the Sloan Dig…