Intergalactic Hydrogen Clouds at Low-Redshift: Connections To Voids And Dwarf Galaxies

J. Michael Shull, John T. Stocke, Steve Penton

We provide new post-COSTAR data on one sightline (Mrk 421) and updated data from another (I Zw 1) from our Hubble Space Telescope (HST) survey of intergalactic Lyman-alpha clouds l…