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The Ellipticities of Cluster Early-type Galaxies from z~1 to z~0: No Evolution in the Overall Distribution of Bulge-to-Disk Ratios
B. P. Holden, M. Franx, G. D. Illingworth +7
We have compiled a sample of early-type cluster galaxies from 0 < z < 1.3 and measured the evolution of their ellipticity distributions. Our sample contains 487 galaxies in 17 z>0.…
Formation epochs, star formation histories and sizes of massive early-type galaxies in cluster and field environments at z=1.2: insights from the rest-frame UV
A. Rettura, P. Rosati, M. Nonino +7
We derive stellar masses, ages and star formation histories of massive early-type galaxies in the z=1.237 RDCS1252.9-2927 cluster and compare them with those measured in a similarl…
The Evolution of the Field and Cluster Morphology-Density Relation for Mass-Selected Samples of Galaxies
A. van der Wel, B. P. Holden, M. Franx +7
The Sloan Digital Sky Survey (SDSS) and photometric/spectroscopic surveys in the GOODS-South field (the Chandra Deep Field-South, CDFS) are used to construct volume-limited, stella…
HST/ACS Coronagraphic Observations of the Dust Surrounding HD 100546
D. R. Ardila, D. A. Golimowski, J. E. Krist +3
We present ACS/HST coronagraphic observations of HD 100546, a B9.5 star, 103 pc away from the sun, taken in the F435W, F606W, and F814W bands. Scattered light is detected up to 14'…
VLT and ACS observations of RDCS J1252.9-2927: dynamical structure and galaxy populations in a massive cluster at z=1.237
R. Demarco, P. Rosati, C. Lidman +26
We present results from an extensive spectroscopic survey, carried out with VLT FORS, and from an extensive multiwavelength imaging data set from the HST Advanced Camera for Survey…
Spectroscopy of z~6 i-dropout Galaxies: Frequency of Ly-alpha Emission and the Sizes of Ly-alpha Emitting Galaxies
C. C. Dow-Hygelund, B. P. Holden, R. Bouwens +8
We report on deep spectroscopy using LRIS on Keck I and FORS2 on the VLT of a sample of 22 candidate z~6 Lyman Break galaxies (LBGs) selected by the i-z> 1.3 dropout criterion. Red…
The Formation Epoch of Early-Type Galaxies in the z ~ 0.9 CL1604 Supercluster
N. L. Homeier, S. Mei, J. P. Blakeslee +12
We analyse the cluster color-magnitude relation (CMR) for early-type galaxies in two of the richer clusters in the z ~ 0.9 supercluster system to derive average ages and formation…
The Possible z=0.83 Precursors of z=0 M* Early-type Cluster Galaxies
B. P. Holden, M. Franx, G. D. Illingworth +8
We examine the distribution of stellar masses of galaxies in MS 1054-03 and RX J0152.7-1357, two X-ray selected clusters of galaxies at z=0.83. Our stellar mass estimates, from spe…
Clusters at Half Hubble Time: Galaxy Structure and Colors in RXJ0152.7-1357 and MS1054-03
J. P. Blakeslee, B. P. Holden, M. Franx +12
We study the photometric and structural properties of spectroscopically confirmed members in the two massive X-ray--selected z=0.83 galaxy clusters MS1054-03 and RXJ0152-1357 using…
Weak-Lensing Detection at z~1.3: Measurement of the Two Lynx Clusters with Advanced Camera for Surveys
M. J. Jee, R. L. White, H. C. Ford +4
(Abridged) We present a HST/ACS weak-lensing study of RX J0849+4452 and RX J0848+4453, the two most distant (at z=1.26 and z=1.27, respectively) clusters yet measured with weak-len…
Evolution of the Color-Magnitude Relation in High-Redshift Clusters: Blue Early-Type Galaxies and Red Pairs in RDCS J0910+5422
S. Mei, J. P. Blakeslee, S. A. Stanford +17
The color-magnitude relation has been determined for the RDCS J0910+5422 cluster of galaxies at redshift z = 1.106. Cluster members were selected from HST ACS images, combined with…
Lyman break galaxies, Lya emitters and a radio galaxy in a protocluster at z=4.1
Roderik A. Overzier, R. J. Bouwens, N. J. G. Cross +17
We present deep HST/ACS observations in g,r,i,z towards the z=4.1 radio galaxy TN J1338-1942 and its overdensity of >30 spectroscopically confirmed Lya emitters (LAEs). We select 6…
The Morphological Demographics of galaxies in the ACS Hubble Ultra Deep Parallel Fields
Felipe Menanteau, Holland C. Ford, Veronica Motta +4
We present a morphological analysis of distant field galaxies using the deep ACS images from the public parallel NICMOS observations of the Hubble Ultra Deep Field obtained in the…
Clustering of Star-forming Galaxies Near a Radio Galaxy at z=5.2
Roderik A. Overzier, G. K. Miley, R. J. Bouwens +13
We present HST/ACS observations of the most distant radio galaxy known, TN J0924-2201 at z=5.2. This radio galaxy has 6 spectroscopically confirmed Lya emitting companion galaxies,…
HST/ACS Images of the GG Tauri Circumbinary Disk
J. E. Krist, K. R. Stapelfeldt, D. A. Golimowski +6
Hubble Space Telescope Advanced Camera for Surveys images of the young binary GG Tauri and its circumbinary disk in V and I bandpasses were obtained in 2002 and are the most detail…
Panchromatic Studies of Distant Clusters of Galaxies
R. Demarco, H. C. Ford, P. Rosati
High redshift (z >~ 1) clusters are ideal probes to study the formation and evolution of large scale structures and galaxies in the universe. A 10-m class ground based telescope, X…
HST/Acs Weak-Lensing and Chandra X-Ray Studies of the High-Redshift Cluster MS 1054-0321
M. J. Jee, R. L. White, H. C. Ford +4
We present Hubble Space Telescope/Advanced Camera for Surveys (ACS) weak-lensing and Chandra X-ray analyses of MS 1054-0321 at z=0.83, the most distant and X-ray luminous cluster i…
The Photometric Performance and Calibration of the HST Advanced Camera For Surveys
M. Sirianni, M. J. Jee, N. Benitez +11
We present the photometric calibration of the HST Advanced Camera for Surveys (ACS). We give here an overview of the performance and calibration of the 2 CCD cameras, the Wide Fiel…
Feedback and Brightest Cluster Galaxy Formation: ACS Observations of the Radio Galaxy TN J1338--1942 at z=4.1
Andrew W. Zirm, R. A. Overzier, G. K. Miley +12
We present deep optical imaging of the z=4.1 radio galaxy TN J1338--1942 obtained using the ACS on-board HST. The radio galaxy is known to reside within a large galaxy overdensity…
Evolution in the Cluster Early-type Galaxy Size-Surface Brightness Relation at z =~ 1
B. P. Holden, J. P. Blakeslee, M. Postman +7
We investigate the evolution in the distribution of surface brightness, as a function of size, for elliptical and S0 galaxies in the two clusters RDCS J1252.9-2927, z=1.237 and RX…
The Morphology - Density Relation in z ~ 1 Clusters
M. Postman, M. Franx, N. Cross +10
We measure the morphology--density relation (MDR) and morphology-radius relation (MRR) for galaxies in seven z ~ 1 clusters that have been observed with the Advanced Camera for Sur…
HST/ACS weak lensing analysis of the galaxy cluster RDCS 1252.9-2927 at z=1.24
M. Lombardi, P. Rosati, J. P. Blakeslee +12
We present a weak lensing analysis of one of the most distant massive galaxy cluster known, RDCS 1252.9-2927 at z=1.24, using deep images from the Advanced Camera for Survey (ACS)…
A Resolved Debris Disk around the G2V star HD 107146
D. R. Ardila, D. A. Golimowski, J. E. Krist +6
We present resolved scattered-light images of the debris disk around HD 107146, a G2 star 28.5 pc from the Sun. This is the first debris disk to be resolved in scattered light arou…
Weak Lensing Analysis of the z~0.8 cluster CL 0152-1357 with the Advanced Camera for Surveys
M. J. Jee, R. L. White, N. Benitez +5
We present a weak lensing analysis of the X-ray luminous cluster CL 0152-1357 at z~0.84 using HST/ACS observations. The unparalleled resolution and sensitivity of ACS enable us to…