418 citations · 4.3k across the 67 of their papers we have counts for
53 papers · 1 filter
Distant Radio Galaxies and their Environments
George Miley, Carlos De Breuck
We review the properties and nature of luminous high-redshift radio galaxies (HzRGs, z > 2) and the environments in which they are located. HzRGs have several distinct constituents…
The Nascent Red Sequence at z~2
Andrew W. Zirm, S. A. Stanford, M. Postman +12
We present new constraints on the evolution of the early-type galaxy color-magnitude relation (CMR) based on deep near-infrared imaging of a galaxy protocluster at z=2.16 obtained…
HST NIR Snapshot Survey of 3CR Radio Source Counterparts II: An Atlas and Inventory of the Host Galaxies, Mergers and Companions
David J. E. Floyd, David Axon, Stefi Baum +10
We present the second part of an H-band (1.6 microns) atlas of z<0.3 3CR radio galaxies, using the Hubble Space Telescope Near Infrared Camera and Multi-Object Spectrometer (HST NI…
Metal enriched gaseous halos around distant radio galaxies: Clues to feedback in galaxy formation
Michiel Reuland, Wil van Breugel, Wim de Vries +11
We present the results of an optical and near-IR spectroscopic study of giant nebular emission line halos associated with three z > 3 radio galaxies, 4C 41.17, 4C 60.07 and B2 0902…
Witnessing the formation of a brightest cluster galaxy at z>2
Roderik A. Overzier, George K. Miley, Holland C. Ford
We present deep observations taken with the HST Advanced Camera for Surveys of the central massive galaxy in a forming cluster at z=2.2. The galaxy hosting the powerful radio sourc…
A very brief description of LOFAR - the Low Frequency Array
H. Falcke, M. P. van Haarlem, A. G. de Bruyn +28
LOFAR (Low Frequency Array) is an innovative radio telescope optimized for the frequency range 30-240 MHz. The telescope is realized as a phased aperture array without any moving p…
Protoclusters associated with z > 2 radio galaxies. I. Characteristics of high redshift protoclusters
B. P. Venemans, H. J. A. Rottgering, G. K. Miley +8
[Abridged] We present the results of a large program conducted with the Very Large Telescope and Keck telescope to search for forming clusters of galaxies near powerful radio galax…
Large-scale structure of Lyman break galaxies around a radio galaxy protocluster at z~4
H. T. Intema, B. P. Venemans, J. D. Kurk +5
We present broad-band imaging with the Subaru Telescope of a 25'x25' field surrounding the radio galaxy TN J1338-1942 at redshift z=4.1. The field contains excesses of Lyman-alpha…
Hubble Space Telescope Near-Infrared Snapshot Survey of 3CR radio source counterparts at low redshift
Juan P. Madrid, Marco Chiaberge, David Floyd +9
We present newly acquired images of the near-infrared counterpart of 3CR radio sources. All the sources were selected to have a redshift of less than 0.3 to allow us to obtain the…
HST/ACS Multiband Coronagraphic Imaging of the Debris Disk around Beta Pictoris
D. A. Golimowski, D. R. Ardila, J. E. Krist +40
(Abridged.) We present F435W (B), F606W (Broad V), and F814W (Broad I) coronagraphic images of the debris disk around Beta Pictoris obtained with HST's Advanced Camera for Surveys.…
An optical-IR jet in 3C133
David J. E. Floyd, Robert Laing, Marco Chiaberge +10
We report the discovery of a new optical-IR synchrotron jet in the radio galaxy 3C133 from our HST/NICMOS snapshot survey. The jet and eastern hotspot are well resolved, and visibl…
The Warped Nuclear Disk of Radio Galaxy 3C 449
Grant R. Tremblay, Alice C. Quillen, David J. E. Floyd +11
Among radio galaxies containing nuclear dust disks, the bipolar jet axis is generally observed to be perpendicular to the disk major axis. The FR I radio source 3C 449 is an outlie…
Cluster Evolution Since z~1
R. Demarco, J. P. Blakeslee, H. C. Ford +8
We have used the Advanced Camera for Surveys (ACS) on the HST to obtain optical imaging of a sample of 8 galaxy clusters in the redshift range 0.8 < z < 1.3. The ACS data provides…
A Dynamical Simulation of the Debris Disk Around HD 141569A
D. R. Ardila, S. H. Lubow, D. A. Golimowski +36
We study the dynamical origin of the structures observed in the scattered-light images of the resolved debris disk around HD 141569A. We explore the roles of radiation pressure fro…
An Atlas of Warm AGN and Starbursts from the IRAS Deep Fields
William C. Keel, Bryan K. Irby, Alana May +4
We present 180 AGN candidates based on color selection from the IRAS slow-scan deep observations, with color criteria broadened from the initial Point-Source Catalog samples to inc…
Properties of Ly-alpha emitters around the radio galaxy MRC 0316-257
B. P. Venemans, H. J. A. Rottgering, G. K. Miley +9
Observations of the radio galaxy MRC 0316-257 at z=3.13 and the surrounding field are presented. Using narrow- and broad-band imaging obtained with the VLT, 77 candidate Ly-alpha e…
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…
A study of distant Ly-alpha emitters in overdense regions
B. P. Venemans, H. J. A. Rottgering, G. K. Miley
Recently, we conducted a Very Large Telescope (VLT) large program to search for forming clusters by looking for overdensities of Ly-alpha emitters around high redshift radio galaxi…
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…
Discovery of Globular Clusters in the Proto-Spiral NGC2915: Implications for Hierarchical Galaxy Evolution
G. R. Meurer, J. P. Blakeslee, M. Sirianni +30
We have discovered three globular clusters beyond the Holmberg radius in Hubble Space Telescope Advanced Camera for Surveys images of the gas-rich dark matter dominated blue compac…
Advanced Camera for Surveys Photometry of the Cluster RDCS1252.9-2927: The Color-Magnitude Relation at z=1.24
J. P. Blakeslee, M. Franx, M. Postman +20
We investigate the color-magnitude (CM) relation of galaxies in the distant X-ray selected cluster RDCS1252.9-2927 at z=1.24 using images obtained with the Advanced Camera for Surv…
Star Formation at z~6: i-dropouts in the ACS GTO fields
R. J. Bouwens, G. D. Illingworth, P. Rosati +33
Using an i-z dropout criterion, we determine the space density of z~6 galaxies from two deep ACS GTO fields with deep optical-IR imaging. A total of 23 objects are found over 46 ar…
Galaxies in Southern Bright Star Fields I. Near-infrared imaging
Andrew J. Baker, Richard I. Davies, Matthew D. Lehnert +6
As a prerequisite for cosmological studies using adaptive optics techniques, we have begun to identify and characterize faint sources in the vicinity of bright stars at high Galact…
Observations of HI Absorbing Gas in Compact Radio Sources at Cosmological Redshifts
R. C. Vermeulen, Y. M. Pihlstroem, W. Tschager +12
We present an overview of the occurrence and properties of atomic gas associated with compact radio sources at redshifts up to z=0.85. Searches for HI 21cm absorption were made wit…