ar X iv : a st ro - p h / 94 10 04 1 v 1 1 3 O ct 1 99 4 SURVEYS FOR Z > 1 FIELD GALAXIES

ar X iv : a st ro - p h / 99 10 06 5 v 1 4 O ct 1 99 9 The Interstellar Medium of Lens Galaxies

We use observations from the CASTLES survey of gravita-tional lenses to study extinction in 23 lens galaxies with 0 < z l < 1. The median differential extinction between lensed images is ∆E(B −V) = 0.05 mag, and the directly measured extinctions agree with the amount needed to explain the differences between the statistics of radio and (optical) quasar lens surveys. We also measure the first ex...

ar X iv : a st ro - p h / 04 10 55 8 v 1 2 3 O ct 2 00 4 Extended Neutral Gas Around z ∼ 0 . 5 Galaxies

I review current results from searching for galaxies giving rise to damped Lyα absorbers (DLAs) at z < 1. Using 14 confirmed DLA galaxies, I further show that intermediate-redshift galaxies possess large H I envelope out to 24−30 h kpc radius. The photometric and spectral properties of these galaxies confirm that DLA galaxies are drawn from the typical field population, and not from a separate ...

ar X iv : a st ro - p h / 98 10 37 9 v 1 2 3 O ct 1 99 8 Supermassive Black Holes Then and Now ∗

Recent surveys suggest that most or all normal galaxies host a massive black hole with 1/100 to 1/1000 of the visible mass of the spheroid of the galaxy. Various lines of argument suggest that these galaxies have merged at least once in our past lightcone, and that the black holes have also merged. This leads to a merger rate of massive black holes of about 1/yrs.

ar X iv : a st ro - p h / 97 10 36 7 v 1 3 1 O ct 1 99 7 Geometrical parametrization of warps for edge - on galaxies

ar X iv : a st ro - p h / 98 12 16 7 v 1 9 D ec 1 99 8 LYMAN BREAK GALAXIES AT z ∼ 3 AND BEYOND

We report on the status of large surveys of photometrically selected star forming galaxies at z ∼ 3 and z ∼ 4, with particular emphasis on both the advantages and the limitations of selecting objects using the “Lyman break” technique. Current results on the luminosity functions, luminosity densities, color distribution, star formation rates, clustering properties, and the differential evolution...