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Abell 851 and the Role of Starbursts in Cluster Galaxy Evolution
A. Oemler, A. Dressler, D. Kelson +5
We use extensive new observations of the very rich z ~ 0.4 cluster of galaxies A851 to examine the nature and origin of starburst galaxies in intermediate-redshift clusters. New HS…
Do submillimeter galaxies really trace the most massive dark matter halos? Discovery of a high-z cluster in a highly active phase of evolution
S. C. Chapman, A. W. Blain, R. Ibata +3
We present detailed observations of a z~1.99 cluster of submillimeter galaxies (SMGs), discovered as the strongest redshift spike in our entire survey of ~100 SMGs across 800 squar…
IRAC Excess in Distant Star-Forming Galaxies: Tentative Evidence for the 3.3m Polycyclic Aromatic Hydrocarbon Feature ?
B. Magnelli, R. R. Chary, A. Pope +3
We present evidence for the existence of an IRAC excess in the spectral energy distribution (SED) of 5 galaxies at 0.6<z<0.9 and 1 galaxy at z=1.7. These 6 galaxies, located in the…
Interferometric detections of GOODS 850-5 at 1 mm and 1.4 GHz
H. Dannerbauer, F. Walter, G. Morrison
We have obtained a position (at sub-arcsecond accuracy) of the submillimeter bright source GOODS 850-5 (also known as GN10) in the GOODS North field using the IRAM Plateau de Bure…
The Far-Infrared Luminosity Function from GOODS-N: Constraining the Evolution of Infrared Galaxies for z \leq 1
Minh T. Huynh, David T. Frayer, Bahram Mobasher +3
We present the IR luminosity function derived from ultra-deep 70 micron imaging of the GOODS-North field. The 70 micron observations are longward of the PAH and silicate features w…
Multiwavelength study of massive galaxies at z~2. I. Star formation and galaxy growth
E. Daddi, M. Dickinson, G. Morrison +12
Examining a sample of massive galaxies at 1.4<z<2.5 with K_{Vega}<22 from the Great Observatories Origins Deep Survey, we compare photometry from Spitzer at mid- and far-IR, to sub…
The Hubble Deep Field North SCUBA Super-map IV - Characterizing submillimetre galaxies using deep Spitzer imaging
Alexandra Pope, Douglas Scott, Mark Dickinson +9
We present SEDs, Spitzer colours, and IR luminosities for 850 micron selected galaxies in the GOODS-N field. Using the deep Spitzer Legacy images and new data and reductions of the…
The GOODS-North Radio Galaxies: On the Origin of the Radio Emission
G. Morrison, M. Dickinson, F. Owen +7
We report on a preliminary study concerning the origin of radio emission within radio galaxies at L(1.4GHz)>1E24 W/Hz in the GOODS-N field. In the local universe, Condon et al. (20…
Using Spitzer to probe the nature of submillimetre galaxies in GOODS-N
Alexandra Pope, Douglas Scott, Mark Dickinson +4
How does the submm galaxy population detected by SCUBA fit into galaxy evolution? How do these rare starbursting systems, which contribute significantly to high redshift star-forma…
Chandra and Spitzer unveil heavily obscured quasars in the SWIRE/Chandra Survey
M. Polletta, B. J. Wilkes, B. Siana +18
Using the large multi-wavelength data set in the chandra/SWIRE Survey (0.6 square degrees in the Lockman Hole), we show evidence for the existence of highly obscured (Compton-thick…
Mid infrared properties of distant infrared luminous galaxies
D Marcillac, D. Elbaz, R. R. Chary +3
We present evidence that the mid infrared (MIR) is a good tracer of the total infrared luminosity, L(IR), and star formation rate (SFR), of galaxies up to z 1.3. We use deep MIR im…
The population of BzK selected ULIRGs at z~2
E. Daddi, M. Dickinson, R. Chary +10
We investigate the multi-wavelength emission of BzK selected star forming galaxies at z~2 in the Great Observatories Origins Deep Survey (GOODS) North region. Most (82%) of the sou…
The 24 micron Luminosity Function of spectroscopic SWIRE sources from the Lockman validation field
N. Onyett, S. Oliver, G. Morrison +4
A spectroscopic follow-up of SWIRE sources from the Lockman Validation Field has allowed the determination of the SWIRE 24 micron Luminosity Function (LF). The spectroscopic sample…
A Deep Radio Survey of Abell 2125 II: Accelerated Galaxy Evolution during a Cluster-Cluster Merger
F. N. Owen, M. J. Ledlow, W. C. Keel +2
Using our extensive radio, optical, near-IR and X-ray imaging and spectroscopy, we consider the reason for the unusually large number of radio detected galaxies, mostly found outsi…
A Deep Radio Survey of Abell 2125 I: Radio, Optical and Near-IR Observations
F. N. Owen, W. C. Keel, M. J. Ledlow +2
We present a description of deep radio, optical, and near IR observations taken with the VLA, the KPNO 2m and the KPNO 4m of the region containing the rich cluster of galaxies Abel…
First Insights into the SWIRE Galaxy Populations
Carol Lonsdale, Maria Polletta, Jason Surace +29
We characterize the SWIRE galaxy populations in the SWIRE validation field within the Lockman Hole, based on the 3.6-24 Spitzer data and deep U,g',r',r' optical imaging within a…
SWIRE: The SIRTF Wide-area InfraRed Extragalactic Survey
Carol J. Lonsdale, Harding E. Smith, Michael Rowan-Robinson +16
The SIRTF Wide-area InfraRed Extragalactic survey (SWIRE), the largest SIRTF Legacy program, is a wide-area, imaging survey to trace the evolution of dusty, star-forming galaxies,…
Radio-selected Galaxies in Very Rich Clusters at z < 0.25: II. Radio Properties and Analysis
Glenn E. Morrison, Frazer N. Owen
(Abridged) We report on the properties of radio-selected galaxies within 30 very-rich Abell clusters with z < 0.25. These radio data sample the ultra-faint (L(1.4) > 2E22 W/Hz) rad…
Radio-selected Galaxies in Very Rich Clusters at z < 0.25: I. Multi-wavelength Observations and Data Reduction Techniques
G. E. Morrison, F. N. Owen, M. J. Ledlow +4
Radio observations were used to detect the `active' galaxy population within rich clusters of galaxies in a non-biased manner that is not plagued by dust extinction or the K-correc…
GMOS Spectroscopy of SCUBA Galaxies Behind A851
M. J. Ledlow, Ian Smail, F. N. Owen +3
We have identified counterparts to two submillimeter (submm) sources, SMM J09429+4659 and SMM J09431+4700, seen through the core of the z=0.41 cluster Abell 851. We employ deep 1.4…
The Diversity of Extremely Red Objects
Ian Smail, F. N. Owen, G. E. Morrison +3
We present a multi-wavelength study of Extremely Red Objects (EROs) employing deep RIzJHK photometry of a 8.5'x8.5' region to identify 68 EROs with R-K>5.3 and K<20.5 (5-sigma). Th…
Afterglow upper limits for four short duration, hard spectrum gamma-ray bursts
K. Hurley, E. Berger, A. Castro-Tirado +21
We present interplanetary network localization, spectral, and time history information for four short-duration, hard spectrum gamma-ray bursts, GRB000607, 001025B, 001204, and 0101…
Hubble Space Telescope Near-infrared and Optical Imaging of Faint Radio Sources in the Distant Cluster Cl0939+4713
Ian Smail, G. E. Morrison, M. E. Gray +4
We present deep Hubble Space Telescope NICMOS near-infrared and WFPC2 optical imaging of a small region in the core of the distant rich cluster Cl0939+4713 (z=0.41). We compare the…
Cluster Mergers as Triggers of Star Formation and Radio Emission: A Comparative Study of the Rich Clusters A2125 and A2645
F. N. Owen, M. J. Ledlow, W. C. Keel +1
We report a detailed optical study of the clusters Abell 2125 and 2645. Both clusters have z=0.25 and richness class 4, yet contrast strongly in blue fraction and radio galaxy popu…