An HST/COS Survey of the Low-Redshift IGM. I. Survey, Methodology, & Overall Results

Charles W. Danforth, Brian A. Keeney, Evan M. Tilton +12

We use high-quality, medium-resolution {\it Hubble Space Telescope}/Cosmic Origins Spectrograph (\HST/COS) observations of 82 UV-bright AGN at redshifts $z_{AGN}<0.85$ to construct…