1999A&A...349L..29D

During the course of Hamburg/CfA Bright Quasar Survey we discovered a bright (B=15.9), high redshift (z_em=2.51) quasar HS 1603+3820. The quasar has a rich complex of Civ absorbers, containing at least five systems, all within 3000km/s from one another. Despite large ejection velocity (v_ej>5000km/s for all components) the complex is likely to be associated with the quasar. There are at least three more associated heavy element absorbers, two of which have z_abs>z_em. Together, they make one of the richest known complexes of associated heavy element absorbers, and the richest in objects with B<16. The combination of redshift, brightness, richness of the metal absorption spectrum and richness of the associated absorption is unmatched among known quasars.