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Massive Ellipticals at High Redshift: NICMOS Imaging of Z~1 Radio Galaxies
A. W. Zirm, M. Dickinson, A. Dey
We present deep, continuum images of eleven high-redshift (0.811 < z < 1.875) 3CR radio galaxies observed with NICMOS. Our images probe the rest-frame optical light where stars are…
Spectroscopic Confirmation of Three Redshift 5.7 Lyman-alpha Emitters from the Large Area Lyman Alpha Survey
James E. Rhoads, Arjun Dey, Sangeeta Malhotra +5
Narrow-band searches for Lyman alpha emission are an efficient way of identifying star-forming galaxies at high redshifts. We present Keck telescope spectra confirming redshifts z…
BRIGHT lights, BIG city: Massive galaxies, giant Ly-a nebulae, and proto--clusters
W. van Breugel, M. Reuland, W. de Vries +10
High redshift radio galaxies are great cosmological tools for pinpointing the most massive objects in the early Universe: massive forming galaxies, active super--massive black hole…
Time-Dependent Optical Spectroscopy of GRB 010222: Clues to the GRB Environment
N. Mirabal, J. P. Halpern, S. R. Kulkarni +9
We present sequential optical spectra of the afterglow of GRB 010222 obtained one day apart using the Low Resolution Imaging Spectrometer (LRIS) and the Echellette Spectrograph and…
HST Imaging of a z=1.55 Old Galaxy Group
Andrew Bunker, Hyron Spinrad, Ross McLure +7
We present high-resolution imaging in the rest-frame optical of the weak radio source LBDS53W091. Previous optical spectroscopy has shown that this object has an evolved stellar po…
SPICES II. Optical and Near-Infrared Identifications of Faint X-Ray Sources from Deep Chandra Observations of Lynx
Daniel Stern, Paolo Tozzi, S. A. Stanford +10
We present our first results on field X-ray sources detected in a deep, 184.7 ks observation with the ACIS-I camera on Chandra. The observations target the Lynx field of SPICES, an…