Browsing Physics & Atmospheric Science Faculty Research, Publications and Presentations by Author "Ivison, R. J."
Now showing items 1-20 of 60
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AEGIS20: a radio survey of the Extended Groth Strip
Ivison, R. J., S. C. Chapman, S. M. Faber, Ian Smail, et al. 2007. "AEGIS20: a radio survey of the Extended Groth Strip." The Astrophysical Journal 660(1): 77-L80We describe AEGIS20 - a radio survey of the Extended Groth Strip (EGS) conducted with the Very Large Array (VLA) at 1.4GHz. The resulting catalog contains 1,123 emitters and is sensitive to ultraluminous starbursts to z1 ... -
The All-wavelength Extended Groth Strip International Survey (AEGIS) Data Sets
Davis, M., P. Guhathakurta, N. Konidaris, J. A. Newman, et al. 2007. "The All-wavelength Extended Groth Strip International Survey (AEGIS) Data Sets." The Astrophysical Journal 660(1): 1-L6In this the first of a series of Letters, we present a description of the panchromatic data sets that have been acquired in the Extended Groth Strip region of the sky. Our survey, the All-wavelength Extended Groth strip ... -
AzTEC half square degree survey of the SHADES fields - II. Identifications, redshifts, and evidence for large-scale structure
Michałowski, M. J., J. S. Dunlop, R. J. Ivison, Michele Cirasuolo, et al. 2012. "AzTEC half square degree survey of the SHADES fields - II. Identifications, redshifts, and evidence for large-scale structure." Monthly Notices of the Royal Astronomical Society 426:1845The AzTEC 1.1 mm survey of the SCUBA HAlf Degree Extragalactic Survey (SHADES) fields is the largest (0.7 deg2) blank-field millimetre-wavelength survey undertaken to date at a resolution of ~18" and a depth of ~1 mJy. We ... -
AzTEC Half Square Degree Survey of the SHADES Fields -- I. Maps, Catalogues, and Source Counts
Austermann, J. E., J. S. Dunlop, T. A. Perera, K. S. Scott, et al. 2009. "AzTEC Half Square Degree Survey of the SHADES Fields -- I. Maps, Catalogues, and Source Counts." Monthly Notices of the Royal Astronomical Society 401:160.We present the first results from the largest deep extragalactic millimetre-wavelength survey undertaken to date. These results are derived from maps covering over 0.7 deg^2, made at 1.1mm, using the AzTEC continuum camera ... -
The Chandra Deep Protocluster Survey: Lyα Blobs are powered by heating, not cooling
Geach, J. E., D. M. Alexander, B. D. Lehmer, Ian Smail, et al. 2009. "The Chandra Deep Protocluster Survey:Lyα Blobs are powered by heating, not cooling." The Astrophysical Journal, 700(1): 1-9We present the results of a 400ks Chandra survey of 29 extended Ly-alpha emitting nebulae (Ly-alpha Blobs, LABs) in the z=3.09 proto-cluster in the SSA22 field. We detect luminous X-ray counterparts in five LABs, implying ... -
Do submillimeter galaxies really trace the most massive dark matter halos? Discovery of a high-z cluster in a highly active phase of evolution
Chapman, S. C., A. W. Blain, R. Ibata, R. J. Ivison, et al. 2009. "Do submillimeter galaxies really trace the most massive dark matter halos? Discovery of a high-z cluster in a highly active phase of evolution." The Astrophysical Journal 691(1): 560-568We 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 square arcmin. It is the largest blank-field ... -
Dynamical Structure of the Molecular Interstellar Medium in an Extremely Bright, Multiply Lensed z 3 Submillimeter Galaxy Discovered with Herschel
Riechers, Dominik A., A. Cooray, A. Omont, R. Neri, et al. 2011. "Dynamical Structure of the Molecular Interstellar Medium in an Extremely Bright, Multiply Lensed z 3 Submillimeter Galaxy Discovered with Herschel." The Astrophysical Journal Letters 733:L12We report the detection of CO 5-4, 3-2, and 1-0 emission in the strongly lensed, Herschel/SPIRE-selected submillimeter galaxy (SMG) HLSW-01 at z=2.9574+/-0.0001, using the Plateau de Bure Interferometer, the Combined Array ... -
The effect of lensing on the identification of bright SCUBA galaxies
Chapman, S. C., Ian Smail, R. J. Ivison, and A. W. Blain. 2002. "The effect of lensing on the identification of bright SCUBA galaxies." Monthly Notices of the Royal Astronomical Society 335(1): 17-L21Spectroscopic surveys of luminous submillimetre-selected sources have uncovered optically-bright galaxies at z<1 close to the positions of several submillimetre (submm) sources. Naive statistical analyses suggest that ... -
Energetic galaxy-wide outflows in high-redshift ultra-luminous infrared galaxies hosting AGN activity
Harrison, C. M., D. M. Alexander, A. M. Swinbank, Ian Smail, et al. 2012. "Energetic galaxy-wide outflows in high-redshift ultra-luminous infrared galaxies hosting AGN activity." Monthly Notices of the Royal Astronomical Society 426:1073.We present integral field spectroscopy observations, covering the [O III]4959,5007 emission-line doublet of eight high-redshift (z=1.4-3.4) ultra-luminous infrared galaxies (ULIRGs) that host Active Galactic Nuclei (AGN) ... -
Evidence for extended, obscured starbursts in submm galaxies
Chapman, S. C., Ian Smail, R. Windhorst, T. Muxlow, et al. 2004. "Evidence for extended, obscured starbursts in submm galaxies." The Astrophysical Journal 611(2): 732-738We compare high-resolution optical and radio imaging of 12 luminous submm galaxies at z=2.2+/-0.2 observed with HST and the MERLIN and VLA at comparable spatial resolution, 0.3" (2kpc). The radio emission traces the likely ... -
An extended Herschel drop-out source in the center of AS1063, a 'normal' dusty galaxy at z=6.1 or SZ substructures?
Boone, F., B. Clément, J. Richard, D. Schaerer, et al. 2013. "An extended Herschel drop-out source in the center of AS1063, a 'normal' dusty galaxy at z=6.1 or SZ substructures?." Astronomy and astrophysics 559:L1In the course of our 870um APEX/LABOCA follow up of the Herschel Lensing Survey we have detected a source in AS1063 (RXC J2248.7-4431), that has no counterparts in any of the Herschel PACS/SPIRE bands, it is a Herschel ... -
Further multiwavelength observations of the SSA22 Ly_alpha emitting `blob'
Chapman, S. C., D. Scott, R. A. Windhorst, D. T. Frayer, et al. 2004. "Further multiwavelength observations of the SSA22 Ly_alpha emitting `blob'." The Astrophysical Journal 606(1): 85-91We present new follow-up observations of the sub-mm luminous Ly_alpha-emitting object in the SSA22 z=3.09 galaxy overdensity, referred to as `Blob 1' by Steidel et al.(2000). In particular we discuss high resolution Hubble ... -
HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths
Wardlow, Julie L., Asantha Cooray, Francesco De Bernardis, A. Amblard, et al. 2012. "HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths." The Astrophysical Journal 762:59.We present a list of 13 candidate gravitationally lensed submillimeter galaxies (SMGs) from 95 square degrees of the Herschel Multi-tiered Extragalactic Survey, a surface density of 0.14\pm0.04deg^{-2}. The selected sources ... -
HerMES: Candidate High-Redshift Galaxies Discovered with Herschel/SPIRE
Dowell, C. Darren, A. Conley, J. Glenn, V. Arumugam, et al. 2014. "HerMES: Candidate High-Redshift Galaxies Discovered with Herschel/SPIRE." The Astrophysical Journal 780:75We present a method for selecting $z>4$ dusty, star forming galaxies (DSFGs) using Herschel/SPIRE 250/350/500 $\mu m$ flux densities to search for red sources. We apply this method to 21 deg$^2$ of data from the HerMES ... -
The Herschel Multi-Tiered Extragalactic Survey: SPIRE-mm Photometric Redshifts
Roseboom, I. G., R. J. Ivison, T. R. Greve, A. Amblard, et al. 2011. "The Herschel Multi-Tiered Extragalactic Survey: SPIRE-mm Photometric Redshifts." Monthly Notices of the Royal Astronomical Society 419:2758.We investigate the potential of submm-mm and submm-mm-radio photometric redshifts using a sample of mm-selected sources as seen at 250, 350 and 500 {\mu}m by the SPIRE instrument on Herschel. From a sample of 63 previously ... -
A Herschel view of the far-infrared properties of submillimetre galaxies
Magnelli, B., D. Lutz, P. Santini, A. Saintonge, et al. 2012. "A Herschel view of the far-infrared properties of submillimetre galaxies." Astronomy and astrophysics 539:155.We study a sample of 61 submillimetre galaxies (SMGs) selected from ground-based surveys, with known spectroscopic redshifts and observed with Herschel as part of the PACS Evolutionary Probe (PEP) and the Herschel Multi-tiered ... -
Herschel-SPIRE, Far-Infrared Properties of Millimetre-Bright and -Faint Radio Galaxies
Chapman, S. C., R. J. Ivison, I. G. Roseboom, R. Auld, et al. 2010. "Herschel-SPIRE, Far-Infrared Properties of Millimetre-Bright and -Faint Radio Galaxies." Monthly Notices of the Royal Astronomical Society 409: L13.(abridged) We present the first study of the farIR properties of high redshift, radio-selected ULIRGs using deep observations obtained with SPIRE from the Herschel Multi-tiered Extragalactic Survey (HerMES). These galaxies ... -
High-resolution CO and radio imaging of ULIRGs: extended CO structures, and implications for the universal star formation law
Bothwell, M. S., S. C. Chapman, L. Tacconi, Ian Smail, et al. 2009. "High-resolution CO and radio imaging of ULIRGs: extended CO structures, and implications for the universal star formation law." Monthly Notices of the Royal Astronomical Society 405(1): 219.We present high spatial resolution (0.4", ~3.5 kpc) PdBI interferometric data on three ultra-luminous infrared galaxies (ULIRGs) at z~2: two submillimetre galaxies and one submillimetre faint star forming radio galaxy. The ... -
High-resolution Millimeter Imaging of Submillimeter Galaxies
Tacconi, L. J., R. Neri, S. C. Chapman, R. Genzel, et al. 2006. "High-resolution Millimeter Imaging of Submillimeter Galaxies." The Astrophysical Journal 640(1): 228-240We present sub-arcsecond resolution IRAM PdBI interferometry of eight submillimeter galaxies at redshifts from 2 to 3.4, where we detect continuum at 1mm and/or CO lines at 3 and 1 mm. The CO 3-2/4-3 line profiles in five ... -
Interferometric CO Observations of submillimeter-faint, radio-selected starburst galaxies at z~2
Chapman, S. C., R. Neri, F. Bertoldi, Ian Smail, et al. 2008. "Interferometric CO Observations of submillimeter-faint, radio-selected starburst galaxies at z~2." The Astrophysical Journal 689(2): 889-896High-redshift, dust-obscured galaxies -- selected to be luminous in the radio but relatively faint at 850um -- appear to represent a different population from the ultra-luminous submillimeter- (submm-) bright population. ...