Average Properties of a Large Sample of z_abs ~ z_em associated Mg II Absorption Line Systems

D. Vanden Berk, P. Khare, D. G. York +16

We have studied a sample of 415 associated (z_ab z_em; relative velocity with respect to QSO <3000km/s) Mg II absorption systems with 1.0<=z_ab<=1.86, in the spectra of SDSS DR3 QS…