74 citations · 74 across the 4 of their papers we have counts for
6 papers
Cosmochemistry, Cosmology and Fundamental Constants: High-Resolution Spectroscopy of Damped Lyman-Alpha Systems
R. Quast, D. Reimers, A. Smette +4
Spectroscopy of QSO absorption lines provides essential observational input for the study of nucleosynthesis and chemical evolution of galaxies at high redshift. But new observatio…
Clues to the origin of metals in the Ly-alpha forest
S. Lopez, S. D'odorico, S. L. Ellison +1
We analyze the z=2 Ly-alpha and CIV forest along two adjacent lines-of-sight at high S/N and spectral resolution to assess the question of the origin of metals in the intergalactic…
The CORALS Survey: A Review and Progress Report on The Search for Dust Obscured Quasar Absorption Line Systems
Sara L. Ellison, Max Pettini, Chris W. Churchill +6
We present a brief overview of the ongoing Complete Optical and Radio Absorption Line System (CORALS) survey. We review the results of our survey for z>2.2 damped Lyman alpha syste…
Disentangling microlensing and differential extinction in the double QSO HE0512-3329
O. Wucknitz, L. Wisotzki, S. Lopez +1
We present the first separate spectra of both components of the small-separation double QSO HE0512-3329 obtained with HST/STIS in the optical and near UV. The similarities especial…
HST spectroscopy of the double QSO HS 1216+5032 AB
Sebastian Lopez, Hans-Juergen Hagen, Dieter Reimers
(Abridged) We report on HST FOS observations of the double QSO HS 1216+5032 AB (z(A)=1.455; z(B)=1.451, and angular separation theta=9 arcsec). An unusual broad-absorption-line (BA…
First estimate of the time delay in HE 1104-1805
Lutz Wisotzki, Olaf Wucknitz, Sebastian Lopez +1
We present first results from five years of spectrophotometric monitoring of the bright double QSO and gravitational lens HE 1104-1805. The quasar has varied considerably over this…