1.7k citations · 19.1k across the 198 of their papers we have counts for
6 papers · 1 filter
The VLBA Imaging and Polarimetry Survey at 5 GHz
J. F. Helmboldt, G. B. Taylor, S. Tremblay +13
We present the first results of the VLBA Imaging and Polarimetry Survey (VIPS), a 5 GHz VLBI survey of 1,127 sources with flat radio spectra. Through automated data reduction and i…
High resolution imaging of the anomalous flux-ratio gravitational lens system CLASS B2045+265: Dark or luminous satellites?
J. P. McKean, L. V. E. Koopmans, C. E. Flack +6
The existence of flux-ratio anomalies between fold and cusp images in galaxy-scale strong-lens systems has led to an interpretation based on the presence of a high mass-fraction of…
The Evolution of Galaxies in X-ray Luminous Groups
Tesla E. Jeltema, John S. Mulchaey, Lori M. Lubin +1
We investigate the galaxy populations in seven X-ray selected, intermediate-redshift groups (0.2<z<0.6). Overall, the galaxy populations in these systems are similar to those in cl…
A Strong-Lens Survey in AEGIS: the influence of large scale structure
L. A. Moustakas, P. J. Marshall, J. A. Newman +10
We report on the results of a visual search for galaxy-scale strong gravitational lenses over 650 arcmin^2 of HST/ACS imaging in the DEEP2-EGS field. In addition to a previously-kn…
X-ray Selected Intermediate-Redshift Groups of Galaxies
John S. Mulchaey, Lori M. Lubin, Chris Fassnacht +2
We present spectroscopic confirmation of nine moderate redshift galaxy groups and poor clusters selected from the ROSAT Deep Cluster Survey. The groups span the redshift range z=0.…
The Gravitational Lens -- Galaxy Group Connection. II. Groups Associated with B2319+051 and B1600+434
M. W. Auger, C. D. Fassnacht, A. L. Abrahamse +2
We report on the results of a spectroscopic survey of the environments of the gravitational lens systems CLASS B1600+434 (z_l = 0.41, z_s = 1.59) and CLASS B2319+051 (z_l = 0.62).…