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Constraints on Galaxy Formation from Deep Galaxy Redshift Surveys and Quasar Absorption Line Studies
Lennox L. Cowie
Magnitude-limited galaxy redshift surveys are now providing large samples of galaxies to beyond z=2, while color-selected and emission-line-selected samples are finding galaxies to…
Redshift clustering in the Hubble Deep Field
Judith G. Cohen, Lennox L. Cowie, David W. Hogg +4
We present initial results from a redshift survey carried out with the Low Resolution Imaging Spectrograph on the 10~m W. M. Keck Telescope in the Hubble Deep Field. In the redshif…
New Insight on Galaxy Formation and Evolution from Keck Spectroscopy of the Hawaii Deep Fields
Lennox L. Cowie, Antoinette Songaila, Esther M. Hu +1
We present the results of spectroscopic studies with the LRIS spectrograph on Keck of two of the Hawaii deep survey fields. The 393 objects observed cover an area of 26.2 square ar…
Metal Enrichment and Ionization Balance in the Lyman Forest at
Antoinette Songaila, Lennox L. Cowie
The recent discovery of carbon in close to half of the low neutral hydrogen column density [$N({\rm H~I}) > 3\ten{14}\cm2$] Lyman forest clouds toward quasars has challe…
HAWAII 167 and Q0059-2735: Heavily Dust-Enshrouded Young QSOs
E. Egami, F. Iwamuro, T. Maihara +2
Using the OH-airglow suppressor spectrograph at the University of Hawaii 2.2m telescope and the CGS4 spectrometer at the United Kingdom Infrared Telescope, we have found exceptiona…