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Photometric Redshifts of Galaxies in the Hubble Deep Field
Kenneth M. Lanzetta, Alberto Fernandez-Soto, Amos Yahil
We describe our application of broad-band photometric redshift techniques to faint galaxies in the Hubble Deep Field. To magnitudes AB(8140) < 26, the accuracy of the photometric r…
The Compared Number Density of High-Redshift Galaxies and Lyman αClouds
A. Fernandez-Soto, K. M. Lanzetta, A. Yahil +1
We use our catalog of photometric redshifts in the Hubble Deep Field (HDF) to estimate the Luminosity Function (LF) of galaxies up to z=2. Using the obtained LF and a relationship…
Damped Lyman-alpha Absorption Associated with an Early-Type Galaxy at Redshift z = 0.16377
Kenneth M. Lanzetta, Arthur M. Wolfe, Hakan Altan +8
We report new HST and ground-based observations of a damped Lyman-alpha absorption system toward the QSO 0850+4400. The redshift of the absorption system is z = 0.163770 and the ne…