The HST Quasar Absorption Line Key Project VII. Absorption Systems at $z_{\mathrm{abs}}\le 1.3$

John N. Bahcall, Jacqueline Bergeron, Alec Boksenberg +9

We present evidence that clumps of \lya lines are physically associated with about half of the extensive metal-line systems (absorption systems with four or more observed metal-lin…