162 citations · 1.9k across the 83 of their papers we have counts for
6 papers · 1 filter
Obscured and Unobscured AGN Evolution and the X-ray background
Ezequiel Treister, C. Megan Urry, Paulina Lira
The Great Observatories Origins Deep Survey (GOODS) combines deep HST and Spitzer imaging with the deepest Chandra/XMM observations to probe obscured AGN at higher redshifts than p…
The Extended Chandra Deep Field-South Survey: Optical Properties of X-ray Detected Sources
Shanil Virani, Ezequiel Treister, C. Megan Urry +2
The Extended Chandra Deep Field-South (E-CDF-S) survey consists of 4 Chandra ACIS-I pointings and covers ~1100 square arcminutes (~0.3 deg^2) centered on the original CDF-S field t…
SMC: Stellar Populations through deep CMDs
Noelia E. D. Noel, Carme Gallart, Edgardo Costa +1
We present deep color-magnitud diagrams (CMDs) reaching the oldest main-sequence turnoffs for 12 fields in the SMC. The {\it B}-band and {\it R}-band observations were performed us…
AGN Unification and the X-ray Background
Ezequiel Treister, C. M. Urry
Active Galactic Nuclei (AGN) unification, which implies a large number of obscured AGN, can explain the optical, infrared and X-ray content of deep multiwavelength surveys. Here, w…
Infrared Number Counts of AGN in the GOODS Fields
E. Treister, C. Megan Urry, the GOODS AGN Team
Using the known numbers and evolution of unobscured AGN, and assuming that there is a large number of corresponding obscured AGN -- as expected if AGN unification is correct -- we…
The Solar Neighborhood XIII: Parallax Results from the CTIOPI 0.9-m Program -- Stars with mu >= 1"/year (MOTION Sample)
Wei-Chun Jao, Todd J. Henry, John P. Subasavage +5
We present the first set of definitive trigonometric parallaxes and proper motions from the Cerro Tololo Inter-American Observatory Parallax Investigation (CTIOPI). Full astrometri…