8 papers
Strong Line Metallicity Calibrators Applied to SDSS Galaxies
Sara L. Ellison, Lisa J. Kewley
We calculate the oxygen abundances for ~45,000 star-forming galaxies selected from the SDSS using nine popular `strong-line' metallicity diagnostics. We find that individual galaxi…
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 Structure of High Redshift Galactic Halos
Sara L. Ellison, Rodrigo Ibata, Max Pettini +4
Observations of multiple or lensed QSOs at high redshift can be used to probe transverse structure in intervening absorption systems. Here we present results obtained from STIS spe…
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…
The host galaxy of GRB010222: The strongest damped Lyman-alpha system known
I. Salamanca, L. Kaper, P. M. Vreeswijk +6
Analysis of the absorption lines in the afterglow spectrum of the gamma-ray burst GRB010222 indicates that its host galaxy (at a redshift of z=1.476) is the strongest damped Lyman-…
Uncloaking the High Redshift Galaxy Population With The Complete Optical and Radio Absorption Line System (CORALS) Survey
Sara L. Ellison, Lin Yan, Isobel M. Hook +3
We present the first results from the Complete Optical and Radio Absorption Line System (CORALS) survey for Damped Lyman Alpha (DLA) systems based on a radio-selected sample of qua…