81 citations · 163 across the 4 of their papers we have counts for
4 papers
A million-solar-mass object detected at cosmological distance using gravitational imaging
D. M. Powell, J. P. McKean, S. Vegetti +3
Structure on sub-galactic scales provides important tests of galaxy formation models and the nature of dark matter. However, such objects are typically too faint to provide robust…
The X-ray Properties of Moderate-redshift Galaxy Groups Selected by Association with Gravitational Lenses
C. D. Fassnacht, D. D. Kocevski, M. W. Auger +5
We present results from a systematic investigation of the X-ray properties of a sample of moderate redshift (0.3<z<0.6) galaxy groups. These groups were selected not by traditional…
Lens Galaxy Properties of SBS1520+530: Insights from Keck Spectroscopy and AO Imaging
M. W. Auger, C. D. Fassnacht, K. C. Wong +3
We report on an investigation of the SBS 1520+530 gravitational lens system and its environment using archival HST imaging, Keck spectroscopic data, and Keck adaptive-optics imagin…
Mass Along the Line of Sight to the Gravitational Lens B1608+656: Galaxy Groups and Implications for H_0
C. D. Fassnacht, R. R. Gal, L. M. Lubin +3
We report the discovery of four groups of galaxies along the line of sight to the B1608+656 gravitational lens system. One group is at the redshift of the primary lensing galaxy (z…