Browsing University of Hertfordshire by Author "Simpson, James"

Now showing items 1-6 of 6

    • An ALMA Survey of Submilleter Galaxies in the Extended Chandra Deep Field-South : The AGN Fraction and X-Ray Properties of Submillimeter Galaxies 

      Wang, S.X.; Brandt, W. N.; Luo, B.; Smail, I.; Alexander, D.M.; Danielson, A. L. R.; Hodge, J. A.; Karim, A.; Lehmer, B.D.; Simpson, James; Swinbank, A.M.; Walter, Fabian; Wardlow, Julie; Xue, Y. Q.; Chapman, S.; Coppin, Kristen; Dannerbauer, H.; De Breuck, Carlos; Menten, K. M.; van der Werf, P. (2013)
      The large gas and dust reservoirs of submillimeter galaxies (SMGs) could potentially provide ample fuel to trigger an active galactic nucleus (AGN), but previous studies of the AGN fraction in SMGs have been controversial ...

    • An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South : The Redshift Distribution and Evolution of Submillimeter Galaxies 

      Simpson, James; Swinbank, Mark; Smail, Ian; Alexander, Dave; Brandt, Niel; Bertoldi, Frank; Breuck, Carlos de; Chapman, Scott; Coppin, Kristen; Cunha, Elisabete da; Danielson, Alice; Dannerbauer, Helmut; Greve, Thomas; Hodge, Jackie; Ivison, Rob; Karim, Alex; Knudsen, Kirsten; Poggianti, Bianca; Schinnerer, Eva; Thomson, Alasdair; Walter, Fabian; Wardlow, Julie; Weiss, Axel; Werf, Paul van der (2013-10-23)
      We present the first photometric redshift distribution for a large unbiased sample of 870um selected submillimeter galaxies (SMGs) with robust identifications based on observations with the Atacama Large Millimeter Array ...

    • An ALMA survey of submillimetre galaxies in the Extended Chandra Deep Field South : High resolution 870um source counts 

      Karim, Alexander; Swinbank, Mark; Hodge, Jackie; Smail, Ian; Walter, Fabian; Biggs, Andy; Simpson, James; Danielson, Alice; Alexander, David; Bertoldi, Frank; de Breuck, Carlos; Chapman, Scott; Coppin, Kristen; Dannerbauer, Helmut; Edge, Alastair; Greve, Thomas; Ivison, Rob; Knudsen, Kirsten; Menten, Karl; Schinnerer, Eva; Wardlow, Julie; Weiß, Axel; van der Werf, Paul (2013-06)
      We report the first counts of faint submillimetre galaxies (SMG) in the 870-um band derived from arcsecond resolution observations with the Atacama Large Millimeter Array (ALMA). We have used ALMA to map a sample of 122 ...

    • An ALMA survey of the brightest sub-millimetre sources in the SCUBA-2 COSMOS field 

      Simpson, James; Smail, Ian; Dudzeviciute, U.; Matsuda, Y.; Hsieh, B. -C.; Swinbank, A. M.; Stach, S. M.; An, Fang Xia; Birkin, J. E.; Ao, Y.; Bunker, A. J.; Chapman, S. C.; Chen, Chian-Chou; Coppin, K. E. K.; Ikarashi, S.; Ivison, R. J.; Mitsuhashi, I.; Saito, T.; Umehata, H.; Wang, R.; Zhao, Y. (2020-07-01)
      We present an ALMA study of the ~180 brightest sources in the SCUBA-2 map of the COSMOS field from the S2COSMOS survey, as a pilot study for AS2COSMOS - a full survey of the ~1,000 sources in this field. In this pilot we ...

    • KILOPARSEC-SCALE DUST DISKS IN HIGH-REDSHIFT LUMINOUS SUBMILLIMETER GALAXIES 

      Hodge, Jackie; Swinbank, Mark; Simpson, James; Smail, Ian; Walter, F.; Alexander, D.M.; Bertoldi, Frank; Biggs, Andy; Brandt, Niel; Chapman, S.C.; Coppin, Kristen; Chen, Chian Chou; Cox, Pierre; Dannerbauer, Helmut; Edge, A. C.; Greve, Thomas; J. Ivison, R.; Karim, A.; Knudsen, K.; Menten, Karl; Rix, H-W.; Schinnerer, Eva; Wardlow, J. L.; Weiss, A.; van der Werf, P. (2016-12-10)
      We present high-resolution (0farcs16) 870 μm Atacama Large Millimeter/submillimeter Array (ALMA) imaging of 16 luminous (${L}_{\mathrm{IR}}\sim 4\times {10}^{12}\,{L}_{\odot }$) submillimeter galaxies (SMGs) from the ALESS ...

    • The SCUBA-2 Cosmology Legacy Survey : ALMA resolves the bright-end of the sub-millimeter number counts 

      Simpson, James; Smail, Ian; Swinbank, Mark; Chapman, Scott; Geach, James; Ivison, Rob; Thomson, Alasdair; Aretxaga, Itziar; Blain, Andrew; Cowley, Will; Chen, Chian-Chou; Coppin, Kristen; Dunlop, Jim; Edge, Alastair; Farrah, Duncan; Ibar, Edo; Karim, Alex; Knudsen, Kirsten; Meijerink, Rowin; Michalowski, Michal; Scott, Douglas; Spanns, Marco; Werf, Paul van der (2015-07-10)
      We present high-resolution 870-um ALMA continuum maps of 30 bright sub-millimeter sources in the UKIDSS UDS field. These sources are selected from deep, 1-square degrees 850-um maps from the SCUBA--2 Cosmology Legacy Survey, ...