10 papers · 1 filter
WFPC2 Imaging of Quasar Environments: A Comparison of LBQS and HST Archive Quasars
R. A. Finn, C. D. Impey, E. J. Hooper
We present Hubble Space Telescope (HST) Wide Field Planetary Camera 2 (WFPC2) data on the large-scale environments of 16 0.39 < z < 0.51 quasars from the Large Bright Quasar Survey…
Infrared Properties of High Redshift and X-ray Selected AGN Samples
Belinda J. Wilkes, Eric J. Hooper, Kim K. McLeod +7
The NASA/ISO Key Project on active galactic nuclei (AGN) seeks to better understand the broad-band spectral energy distributions (SEDs) of these sources from radio to X-rays, with…
Host Galaxies of Lensed Luminous Quasars at z~2
H. -W. Rix, E. Falco, C. Impey +5
We present H-band observations of gravitationally lensed QSO host galaxies obtained with NICMOS on HST as part of the CfA-Arizona-Gravitational-Lens-Survey (CASTLES). The detection…
The Evolution of Gravitational Lens Galaxies
C. S. Kochanek, E. E. Falco, C. D. Impey +6
Most gravitational lens galaxies are early-type galaxies in relatively low density environments. We show that they lie on the same fundamental plane as early-type galaxies in both…
The Interstellar Medium of Lens Galaxies
B. A. McLeod, E. E. Falco, C. S. Kochanek +6
We use observations from the CASTLES survey of gravitational lenses to study extinction in 23 lens galaxies with . The median differential extinction between lensed im…
The CASTLES gravitational lensing tool
E. E. Falco, C. S. Kochanek, J. Lehar +6
We describe a series of new applications of gravitational lenses as astrophysical and cosmological tools. Such applications are becoming possible thanks to advances in the quality…