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The Luminosity Functions of the Galaxy Cluster MS1054-0321 at z=0.83 based on ACS Photometry
Tomotsugu Goto, Marc Postman, Nicholas J. G. Cross +41
We present new measurements of the galaxy luminosity function (LF) and its dependence on local galaxy density, color, morphology, and clustocentric radius for the massive z=0.83 cl…
Infall, the Butcher-Oemler Effect, and the Descendants of Blue Cluster Galaxies at z~0.6
Kim-Vy H. Tran, Pieter van Dokkum, Garth D. Illingworth +3
Using wide-field HST/WFPC2 imaging and extensive Keck/LRIS spectroscopy, we present a detailed study of the galaxy populations in MS2053--04, a massive, X-ray luminous cluster at z…
Galaxies at z~7-8: z-dropouts in the Hubble Ultra Deep Field
Rychard J. Bouwens, Rodger I. Thompson, Garth D. Illingworth +6
We have detected likely z~7-8 galaxies in the 144"x144" NICMOS observations of the Hubble Ultra Deep Field. Objects are required to be >3 sigma detections in both NICMOS bands, J a…
Strong Lensing Analysis of A1689 from Deep Advanced Camera Images
Tom Broadhurst, Narciso Benitez, Dan Coe +6
We analyse deep multi-colour Advanced Camera images of the largest known gravitational lens, A1689. Radial and tangential arcs delineate the critical curves in unprecedented detail…
Chandra Constraints on the AGN Fraction and Star Formation Rate of Red z>~2 Galaxies in the FIRES MS1054-03 Field
Kate H. R. Rubin, Pieter G. van Dokkum, Paolo Coppi +4
Very deep near-infrared observations have recently uncovered a significant population of red galaxies at redshifts z>2. These distant red galaxies (DRGs) are efficiently selected b…
A Substantial Population of Red Galaxies at z > 2: Modeling of the Spectral Energy Distributions of an Extended Sample
N. M. Forster Schreiber, P. G. van Dokkum, M. Franx +12
We investigate the nature of the substantial population of high-z galaxies with Js-Ks>2.3 discovered as part of our FIRES survey. This colour cut efficiently isolates z>2 galaxies…
The Luminosity Function of Early-Type Galaxies at z~0.75
N. J. G. Cross, R. Bouwens, N. Benitez +35
We measure the luminosity function of morphologically selected E/S0 galaxies from to using deep high resolution Advanced Camera for Surveys imaging data. Our analys…
Galaxy Size Evolution at High Redshift and Surface Brightness Selection Effects: Constraints from the Hubble Ultra Deep Field
R. J. Bouwens, G. D. Illingworth, J. P. Blakeslee +2
We use the exceptional depth of the Ultra Deep Field (UDF) and UDF-Parallel ACS fields to study the sizes of high redshift (z~2-6) galaxies and address long-standing questions abou…
Ultra Compact Dwarf galaxies in Abell 1689: a photometric study with the ACS
S. Mieske, L. Infante, N. Benitez +37
The properties of Ultra Compact Dwarf (UCD) galaxy candidates in Abell 1689 (z=0.183) are investigated, based on deep high resolution ACS images. A UCD candidate has to be unresolv…
Stellar Populations and Kinematics of Red Galaxies at z>2: Implications for the Formation of Massive Galaxies
Pieter van Dokkum, Marijn Franx, Natascha Forster Schreiber +13
We recently identified a substantial population of galaxies at z>2 with red rest-frame optical colors. These distant red galaxies (DRGs) are efficiently selected by the simple obse…
Star Formation at z~6: The UDF-Parallel ACS Fields
R. J. Bouwens, G. D. Illingworth, R. I. Thompson +8
We report on the i-dropouts detected in two exceptionally deep ACS fields (B_{435}, V_{606}, i_{775}, and z_{850} with 10 sigma limits of 28.8, 29.0, 28.5, and 27.8, respectively)…
Field E+A Galaxies at Intermediate Redshifts (0.3<z<1)
Kim-Vy H. Tran, Marijn Franx, Garth D. Illingworth +3
We select E+A candidates from a spectroscopic dataset of ~800 field galaxies and measure the E+A fraction at 0.3<z<1 to be 2.7+/-1.1%, a value lower than that in galaxy clusters at…
A large population of 'Lyman-break' galaxies in a protocluster at redshift z=4.1
George K. Miley, Roderik A. Overzier, Zlatan I. Tsvetanov +1
The most massive galaxies and the richest clusters are believed to have emerged from regions with the largest enhancements of mass density relative to the surrounding space. Distan…