73 citations · 123 across the 4 of their papers we have counts for
4 papers
Multi-Frequency Analysis of the New Wide-Separation Gravitational Lens Candidate RX J0921+4529
J. A. Munoz, E. E. Falco, C. S. Kochanek +9
We report the discovery of a new two-image gravitational lens candidate. The system RX J0921+4529 contains two z_s=1.66 quasars separated by 6."93 with an H band magnitude differen…
The Host Galaxy of the Lensed Quasar Q 0957+561
C. R. Keeton, E. E. Falco, C. D. Impey +6
Infrared images of the Q 0957+561 gravitational lens obtained with the Hubble Space Telescope show two large (\sim 5 arcsec) lensed images of the z_s=1.41 quasar host galaxy. Parts…
The Quasar Pair Q 1634+267 A, B and the Binary QSO vs. Dark Lens Hypotheses
C. Y. Peng, C. D. Impey, E. E. Falco +6
Deep HST/NICMOS H (F160W) band observations of the z=1.96 quasar pair Q 1634+267A,B reveal no signs of a lens galaxy to a 1 sigma threshold of approximately 22.5 mag. The minimum l…
The Infrared Einstein Ring in the Gravitational Lens MG1131+0456 and the Death of the Dusty Lens Hypothesis
C. S. Kochanek, E. E. Falco, C. D. Impey +5
We have obtained and modeled new NICMOS images of the lens system MG1131+0456, which show that its lens galaxy is an H=18.6 mag, transparent, early-type galaxy at a redshift of abo…