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24 papers · 1 filter
Balancing the Energy Budget between Star-Formation and AGN in High Redshift Infrared Luminous Galaxies
E. J. Murphy, R. -R. Chary, D. M. Alexander +5
(abridged) We present deep Spitzer mid-infrared spectroscopy, along with 16, 24, 70, and 850um photometry, for 22 galaxies located in GOODS-N. The sample spans a redshift range of…
Two bright submillimeter galaxies in a z=4.05 proto-cluster in GOODS-North, and accurate radio-infrared photometric redshifts
E. Daddi, H. Dannerbauer, D. Stern +7
We present the serendipitous discovery of z=4.05 molecular gas CO emission lines with the IRAM Plateau de Bure interferometer coincident with GN20 and GN20.2, two luminous submilli…
Molecular Gas in the z=1.2 Ultraluminous Merger GOODS J123634.53+621241.3
David T. Frayer, Jin Koda, Alexandra Pope +14
We report the detection of CO(2-1) emission from the z=1.2 ultraluminous infrared galaxy (ULIRG) GOODS J123634.53+621241.3 (also known as the sub-millimeter galaxy GN26). These obs…
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…
Reliable Identification of Compton-thick Quasars at z~2: Spitzer Mid-IR spectroscopy of HDF-oMD49
D. M. Alexander, R. R. Chary, A. Pope +6
Many models that seek to explain the origin of the unresolved X-ray background predict that Compton-thick Active Galactic Nuclei (AGNs) are ubiquitious at high redshift. However, f…
The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- VI. 350 micron mapping of submillimetre galaxies
Kristen Coppin, Mark Halpern, Douglas Scott +24
A follow-up survey using the Submillimetre High-Angular Resolution Camera (SHARC-II) at 350 microns has been carried out to map the regions around several 850 micron-selected sourc…
The SCUBA Half Degree Extragalactic Survey (SHADES) - IX: the environment, mass and redshift dependence of star formation
S. Serjeant, S. Dye, A. Mortier +17
We present a comparison between the SCUBA Half Degree Extragalactic Survey (SHADES) at 450 and 850 microns in the Lockman Hole East with a deep Spitzer Space Telescope survey at 3.…
Mid-Infrared Spectral Diagnosis of Submillimeter Galaxies
Alexandra Pope, Ranga-Ram Chary, David M. Alexander +6
We present deep mid-infrared spectroscopy with the Spitzer Space Telescope of 13 submillimeter galaxies (SMGs) in the Great Observatories Origins Deep Survey North (GOODS-N) field.…
The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- V. Submillimetre properties of near-infrared--selected galaxies in the Subaru/XMM--Newton deep field
T. Takagi, A. M. J. Mortier, K. Shimasaku +21
We have studied the submillimetre (submm) properties of the following classes of near-infrared (NIR)-selected massive galaxies at high redshifts: BzK-selected star-forming galaxies…
Multiwavelength study of massive galaxies at z~2. II. Widespread Compton thick AGN and the concurrent growth of black holes and bulges
E. Daddi, D. M. Alexander, M. Dickinson +16
Approximately 20-30% of 1.4<z<2.5 galaxies with K<22 (Vega) detected with Spitzer MIPS at 24um show excess mid-IR emission relative to that expected based on the rates of star form…
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 evolution of submillimetre galaxies: two populations and a redshift cut-off
J. V. Wall, Alexandra Pope, D. S. Scott
We explore the epoch dependence of number density and star-formation rate for submillimetre galaxies (SMGs) found at 850 um. The study uses a sample of 38 SMG in the GOODS-N field,…
The SCUBA HAlf Degree Extragalactic Survey (SHADES) - IV: Radio-mm-FIR photometric redshifts
Itziar Aretxaga, David H. Hughes, Kristen Coppin +28
We present the redshift distribution of the SHADES galaxy population based on the rest-frame radio-mm-FIR colours of 120 robustly detected 850um sources in the Lockman Hole East (L…
Measuring PAH Emission in Ultradeep Spitzer IRS Spectroscopy of High Redshift IR Luminous Galaxies
H. I. Teplitz, V. Desai, L. Armus +10
The study of the dominant population of high redshift IR-luminous galaxies (10^11 - 10^12 Lsun at 1<z<3), requires observation of sources at the ~0.1 mJy level in the mid-IR. We pr…
The Infrared Properties of Submillimeter Galaxies: Clues From Ultra-Deep 70 Micron Imaging
Minh T. Huynh, Alexandra Pope, David T. Frayer +1
We present 70 micron properties of submillimeter galaxies (SMGs) in the Great Observatories Origins Deep Survey (GOODS) North field. Out of thirty submillimeter galaxies (S_850 > 2…
Infrared spectral energy distributions of submillimetre galaxies
Alexandra Pope, Ranga-Ram Chary, Mark Dickinson +1
Submillimetre (sub-mm) galaxies have very high infrared (IR) luminosities and are thousands of times more numerous at z~2 than local ultra-luminous IR galaxies. They therefore repr…
The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- II. Submillimetre maps, catalogue and number counts
K. Coppin, E. L. Chapin, A. M. J. Mortier +54
We present the maps, source catalogue and number counts of the largest, most complete and unbiased extragalactic submillimetre survey ever undertaken: the 850-micron SCUBA HAlf Deg…
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…
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…
On the cross-correlation of sub-mm sources and optically-selected galaxies
Chris Blake, Alexandra Pope, Douglas Scott +1
Bright sub-mm galaxies are expected to arise in massive highly-biased haloes, and hence exhibit strong clustering. We argue that a valuable tool for measuring these clustering prop…
The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- I. Survey motivation, design and data processing
A. M. J. Mortier, S. Serjeant, J. S. Dunlop +2
The SCUBA HAlf Degree Extragalactic Survey (SHADES) is a major blank-field extragalactic sub-mm survey underway at the James Clerk Maxwell telescope.SHADES aims to cover half a squ…
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 Hubble Deep Field North SCUBA Super-map III - Optical and near-infrared properties of submillimetre galaxies
Alexandra Pope, Colin Borys, Douglas Scott +3
We present a new sub-mm Super-map in the HDF-North region (GOODS-North field), containing 40 statistically robust sources at 850 microns. This map contains additional data, and sev…
Optical and near-infrared properties of submillimetre galaxies in the GOODS-North field
Alexandra Pope, Douglas Scott, Colin Borys +3
We investigate the photometric redshift distribution, colours and morphologies of a large sample of submillimetre sources in the GOODS-North region. With the depth achieved by the…