1.2k citations · 7.7k across the 191 of their papers we have counts for
6 papers · 1 filter
The SCUBA Bright Quasar Survey (SBQS): 850micron observations of the z>4 sample
Kate G. Isaak, Robert S. Priddey, Richard G. McMahon +4
We present initial results of a new, systematic search for massive star-formation in the host galaxies of the most luminous and probably most massive z>=4 radio-quiet quasars (M(B)…
Statistical Properties of DLAs and sub-DLAs
Celine Peroux, Mike J. Irwin, Richard G. McMahon +1
Quasar absorbers provide a powerful observational tool with which to probe both galaxies and the intergalactic medium up to high redshift. We present a study of the evolution of th…
The evolution of Omega(HI) and the epoch of formation of damped Lyman-alpha absorbers
Celine Peroux, Richard G. McMahon, Lisa J. Storrie-Lombardi +1
We present a study of the evolution of the column density distribution, f(N,z), and total neutral hydrogen mass in high-column density quasar absorbers using candidates from a rece…
UVES observations of a damped Ly-alpha system at z_abs = 4.466 towards the quasar APM BR J0307-4945
M. Dessauges-Zavadsky, S. D'Odorico, R. G. McMahon +4
We present the first high-resolution (6.2 to 7.7 km/s FWHM) spectra of the APM BR J0307-4945 quasar at z_em = 4.73 obtained with UVES on the 8.2m VLT Kueyen telescope. We focus our…
Cosmological Evolution of the Universe Neutral Gas Mass Measured by Quasar Absorption Systems
Celine Peroux, Richard G. McMahon, Mike Irwin +1
The cosmological evolution of neutral hydrogen is an efficient way of tracing structure formation with redshift. It indicates the rate of evolution of gas into stars and hence the…
Absorption Systems in the Spectra of 66 z > 4 Quasars
Celine Peroux, Lisa J. Storrie-Lombardi, Richard G. McMahon +2
We present high signal-to-noise, 5 A resolution (FWHM) spectra of 66 z \ga 4 bright quasars obtained with the 4 m Cerro Tololo Inter-American Observatory and 4.2 m William Hershel…