Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942607n&link_type=abstract
American Astronomical Society, AAS Meeting #219, #426.07
Astronomy and Astrophysics
Astronomy
Scientific paper
We conducted an extensive literature search for z<1 spectroscopically confirmed MgII absorption-selected galaxies. We standardized the galaxy impact parameters, k-corrections, absolute AB magnitudes, and rest-frame colors to Ωm=0.3, Ωk=0.0, ΩΛ=0.7 cosmology. The full sample comprises 242 galaxies, where 44 are ambiguous identifications or group galaxies. Selected results based on the remaining 198 galaxies include: (1) an 8.6 σ anti-correlation between W(2796) and impact parameter, and (2) a confirmation of the gas halo size-luminosity scaling with R*=106 kpc and β=0.35 for W(2796)>0.1 Ǻ. Within the gas halo the fraction of absorbers increases as the EW threshold is decreased such that 27% have EW>1.0 [[Unable to Display Character: Ǻ]], 47% for EW>0.6 [[Unable to Display Character: Ǻ]], 72% for EW>0.3 [[Unable to Display Character: Ǻ]], and 85% for EW>0.1 [[Unable to Display Character: Ǻ]]. The full sample and further analysis are presented.
Churchill Christopher W.
Nielsen Nikole M.
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