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The Neutral Hydrogen Cosmological Mass Density at z=5
Neil H. M. Crighton, Michael T. Murphy, J. Xavier Prochaska +8
We present the largest homogeneous survey of damped Lyman- systems (DLAs) using the spectra of 163 QSOs that comprise the Giant Gemini GMOS (GGG) survey. With this surve…
Gas around galaxy haloes - II: hydrogen absorption signatures from the environments of galaxies at redshifts 2 < z < 3
A. Meiksin, J. S. Bolton, E. R. Tittley
We compare predictions of large-scale cosmological hydrodynamical simulations for neutral hydrogen absorption signatures in the vicinity of 1e11 - 1e12.5 MSun haloes with observati…
Characteristics of He II Proximity Profiles
W. Zheng, D. Syphers, A. Meiksin +4
The proximity profile in the spectra of z~3 quasars, where fluxes extend blueward of the He II Lya wavelength 304 (1+z) A, is one of the most important spectral features in the stu…