Browsing University of Hertfordshire by Author "Rawlings, S."

Now showing items 1-20 of 41

    • A 325-MHz GMRT survey of the Herschel-ATLAS/GAMA fields 

      Mauch, T.; Kloeckner, H-R.; Rawlings, S.; Jarvis, M.J.; Hardcastle, M.J.; Obreschkow, D.; Saikia, D.J.; Thompson, M.A. (2013-10-01)
      We describe a 325-MHz survey, undertaken with the Giant Metrewave Radio Telescope (GMRT), which covers a large part of the three equatorial fields at 9, 12 and 14.5 h of right ascension from the Herschel-Astrophysical ...

    • The 6** sample and the highest redshift radio galaxies 

      Cruz, M.J.; Jarvis, M.J.; Blundell, K.M.; Rawlings, S. (World Scientific Publishing, 2004)
      We present a new radio sample, 6C** designed to find radio galaxies at z > 4 and discuss some of its near-infrared imaging follow-up results.

    • The 6C** sample of steep-spectrum radio sources: I - Radio data, near-infrared imaging and optical spectroscopy 

      Cruz, M.J.; Jarvis, M.J.; Blundell, K.M.; Rawlings, S.; Croft, S.; Kloeckner, H-R.; McLure, R.J.; Simpson, C.; Targett, T.A.; Willott, C.J. (2006)
      We present basic observational data on the 6C** sample. This is a new sample of radio sources drawn from the 151MHz 6C survey, which was filtered with radio criteria chosen to optimize the chances of finding radio galaxies ...

    • The 6C** sample of steep-spectrum radio sources: II - Redshift distribution and the space density of high-redshift radio galaxies 

      Cruz, M.J.; Jarvis, M.J.; Rawlings, S.; Blundell, K.M. (2007)
      We use the 6C** sample to investigate the co-moving space density of powerful, steep- spectrum radio sources. This sample, consisting of 68 objects, has virtually complete K-band photometry and spectroscopic redshifts for ...

    • The accretion history of the Universe with the Square Kilometre Array 

      Jarvis, M.J.; Rawlings, S. (2004)
      In this paper we investigate how the Square Kilometre Array (SKA) can aid in determining the evolutionary history of active galactic nuclei (AGN) from redshifts z = 0 ! 6. Given the vast collecting area of the SKA, it will ...

    • The detection of a population of submillimeter-bright, strongly lensed galaxies 

      Negrello, Mattia; Hopwood, R.; de Zotti, G.; Cooray, A.; Verma, A.; Bock, J.; Frayer, D. T.; Gurwell, M.A.; Omont, A.; Neri, R.; Dannerbauer, H.; Leeuw, L. L.; Barton, E.; Cooke, J.; Kim, S.; da Cunha, E.; Rodighiero, G.; Cox, P.; Bonfield, David G.; Jarvis, M.J.; Serjeant, S.; Ivison, R.J.; Dye, S.; Aretxaga, I.; Hughes, D.H.; Ibar, E.; Bertoldi, F.; Valtchanov, I.; Eales, S.; Dunne, L.; Driver, S. P.; Auld, R.; Buttiglione, S.; Cava, A.; Grady, C.A.; Clements, D. L.; Dariush, A.; Fritz, J.; Hill, D.; Hornbeck, J.B.; Kelvin, L.; Lagache, G.; Lopez-Caniego, M.; Gonzalez-Nuevo, J.; Maddox, S.; Pascale, E.; Pohlen, M.; Rigby, E. E.; Robotham, A.; Simpson, C.; Smith, Daniel; Temi, P.; Thompson, Mark; Woodgate, B.E.; York, D.G.; Aguirre, J.E.; Beelen, A.; Blain, A.; Baker, A.J.; Birkinshaw, M.; Blundell, R.; Bradford, C.M.; Burgarella, D.; Danese, L.; Dunlop, J. S.; Fleuren, S.; Glenn, J.; Harris, A.I.; Kamenetzky, J.; Lupu, R. E.; Maddalena, R. J.; Madore, B. F.; Maloney, P. R.; Matsuhara, H.; Michaowski, M. J.; Murphy, E. J.; Naylor, B.J.; Nguyen, H.; Popescu, C.; Rawlings, S.; Rigopoulou, D.; Scott, D.; Scott, K.S.; Seibert, M.; Smail, I.; Tuffs, R. J.; Vieira, J. D.; van der Werf, P. P.; Zmuidzinas, J. (2010)
      Gravitational lensing is a powerful astrophysical and cosmological probe and is particularly valuable at submillimeter wavelengths for the study of the statistical and individual properties of dusty star-forming galaxies. ...

    • The discovery of a massive supercluster at z = 0.9 in the UKIDSS Deep eXtragalactic Survey 

      Swinbank, A.M.; Edge, A.C.; Smail, I.; Stott, J.P.; Bremer, M.; Sato, Y.; van Breukelen, C.; Jarvis, M.J.; Waddington, I.; Clewley, L.; Bergeron, J.; Cotter, G.; Dye, S.; Geach, James; Gonzalez-Solares, E.; Hirst, P.; Ivison, R.J.; Rawlings, S.; Simpson, C.; Smith, G.P.; Verma, A.; Yamada, T. (2007)

    • The discovery of a typical radio galaxy at z = 4.88 

      Jarvis, M.J.; Teimourian, H.; Simpson, C.; Smith, Daniel; Rawlings, S.; Bonfield, D. (2009)
      In this Letter, we report the discovery of a z= 4.88 radio galaxy discovered with a new technique which does not rely on pre-selection of a sample based on radio properties such as steep-spectral index or small angular ...

    • A doubled double hot spot in J0816+5003 and the logarithmic slope of the lensing potential 

      Blundell, K.M.; Schechter, P.L.; Morgan, N.D.; Jarvis, M.J.; Rawlings, S.; Tonry, J.L. (2010)
      We present an analysis of observations of the doubly lensed double hot spot in the giant radio galaxy J0816+5003 from MERLIN, MDM, WIYN, WHT, UKIRT, and the VLA. The images of the two hot spot components span a factor of ...

    • Dust, Gas, and the Evolutionary Status of the Radio Galaxy 8C 1435+635 at z = 4.25 

      Ivison, R.J.; Dunlop, J.S.; Hughes, D.H.; Archibald, E.N.; Stevens, J. A.; Holland, W.S.; Robson, E.I.; Eales, S.; Rawlings, S.; Dey, A.; Gear, W.K. (1998)
      We present the results of new rest-frame far-IR observations of the z\4.25 radio galaxy 8C 1435]635, which not only conÐrm that it contains an enormous quantity of dust (as Ðrst inferred from its millimeter-wave detection ...

    • Evidence for a maximum jet efficiency for the most powerful radio galaxies 

      Fernandes, C.A.C.; Jarvis, M.J.; Rawlings, S.; Martinez-Sansigre, A.; Hatziminaoglou, E.; Lacy, M.; Page, M.J.; Stevens, Jason; Vardoulaki, E. (2011-03)
      We use new mid-infrared (mid-IR) photometry from the Spitzer Space Telescope to study the relations between low-frequency radio luminosity density L-nu 151 (MHz), mid-IR (12 mu m rest frame) luminosity nu L-nu 12 (mu m) ...

    • Evidence of a link between the evolution of clusters and their AGN fraction 

      van Breukelen, C.; Simpson, C.; Rawlings, S.; Akiyama, M.; Bonfield, D.; Clewley, L.; Jarvis, M.J.; Mauch, T.; Readhead, T.; Stobbart, A.M.; Swinbank, M.; Watson, M. (2009)

    • Evidence of different star formation histories for high- and low-luminosity radio galaxies 

      Herbert, P.D.; Jarvis, M.J.; Willott, C.J.; McLure, R.J.; Mitchell, E.; Rawlings, S.; Hill, G.J.; Dunlop, J.S. (2010)
      We present the results of our investigation into the stellar populations of 24 radio galaxies at z≃ 0.5 drawn from four complete, low-frequency-selected radio surveys. We use the strength of the 4000-Å break as an indicator ...

    • Evidence that powerful radio jets have a profound influence on the evolution of galaxies 

      Rawlings, S.; Jarvis, M.J. (2004)

    • The evolution of the fundamental plane of radio galaxies from z∼ 0.5 to the present day 

      Herbert, Peter; Jarvis, M.J.; Willcott, C.J.; McLure, R.J.; Mitchell, E.; Rawlings, S.; Hill, G.J.; Dunlop, J.S. (2011)
      We present deep spectroscopic data for a 24-object subsample of our full 41-object z∼ 0.5 radio galaxy sample in order to investigate the evolution of the Fundamental Plane of radio galaxies. We find that the low-luminosity, ...

    • Galaxy clusters at 0.6-z-1.4 in the UKIDSS ultra deep survey early data release 

      van Breukelen, C.; Clewley, L.; Bonfield, D.; Rawlings, S.; Jarvis, M.J.; Barr, J.M.; Foucaud, S.; Almaini, O.; Cirasuolo, M.; Dalton, G.; Dunlop, J.S.; Edge, A.C.; Hirst, P.; McLure, R.J.; Page, M.J.; Sekiguchi, K.; Simpson, C.; Smail, I.; Watson, M. (2006)

    • The Herschel ATLAS 

      Eales, S.; Dunne, L.; Clements, D.; Cooray, A.; de Zotti, G.; Dye, S.; Ivison, R.; Jarvis, M.J.; Lagache, G.; Maddox, S.; Negrello, M.; Serjeant, S.; Thompson, Mark; van Kampen, E.; Amblard, A.; Andreani, P.; Baes, M.; Beelen, A.; Bendo, G. J.; Benford, D.; Bertoldi, F.; Bock, J.; Bonfield, D.; Boselli, A.; Bridge, C.; Buat, V.; Burgarella, D.; Carlberg, R.; Cava, A.; Chanial, P.; Charlot, S.; Christopher, N.; Coles, P.; Cortese, L.; Dariush, A.; da Cunha, E.; Dalton, G.; Danese, L.; Dannerbauer, H.; Driver, S.; Dunlop, J.; Fan, L.; Farrah, D.; Frayer, D.; Frenk, C.; Geach, James; Gardner, J.; Gomez, H.; González-Nuevo, J.; González-Solares, E.; Griffin, M.; Hardcastle, M.J.; Hatziminaoglou, E.; Herranz, D.; Hughes, D.; Ibar, E.; Jeong, W.-S.; Lacey, C.; Lapi, A.; Lawrence, A.; Lee, M.; Leeuw, L.; Liske, J.; López-Caniego, M.; Müller, T.; Nandra, K.; Panuzzo, P.; Papageorgiou, A.; Patanchon, G.; Peacock, J.; Pearson, C.; Phillipps, S.; Pohlen, M.; Popescu, C.; Rawlings, S.; Rigby, E.; Rigopoulou, M.; Robotham, A.; Rodighiero, G.; Sansom, A.; Schulz, B.; Scott, D.; Smith, Daniel; Sibthorpe, B.; Smail, I.; Stevens, J.; Sutherland, W.; Takeuchi, T.; Tedds, J.; Temi, P.; Tuffs, R.; Trichas, M.; Vaccari, M.; Valtchanov, I.; van der Werf, P.; Verma, A.; Vieria, J.; Vlahakis, C.; White, G.J. (2010-05-01)
      The Herschel ATLAS is the largest open-time key project that will be carried out on the Herschel Space Observatory. It will survey 570 deg2 of the extragalactic sky, 4 times larger than all the other Herschel extragalactic ...

    • Herschel-ATLAS/GAMA: What determines the far-infrared properties of radio galaxies? 

      Virdee, J.S.; Hardcastle, M.J.; Rawlings, S.; Rigopoulou, D.; Mauch, T.; Jarvis, M.J.; Verma, A.; Smith, Daniel; Heywood, I.; White, S. V.; Baes, M.; Cooray, A.; de Zotti, G.; Eales, S.; Michalowski, M. J.; Bourne, N.; Dariush, A.; Dunne, L.; Hopwood, R.; Ibar, E.; Maddox, S.; Smith, M. W. L.; Valiante, E. (2013-06)
      We perform a stacking analysis of Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) data in order to obtain isothermal dust temperatures and rest-frame luminosities at 250 mu m (L-250), for a well-defined sample ...

    • Herschel-ATLAS: Blazars in the science demonstration phase field 

      Gonzalez-Nuevo, J.; de Zotti, G.; Andreani, P.; Barton, E.; Bertoldi, F.; Birkinshaw, M.; Bonavera, L.; Buttiglione, S.; Cooke, J.; Cooray, A.; Danese, G.; Dunne, L.; Eales, S.; Fan, L.; Jarvis, M.J.; Kloeckner, H-R.; Hatziminaoglou, E.; Herranz, D.; Hughes, D.H.; Lapi, A.; Lawrence, A.; Leeuw, L.; Lopez-Caniego, M.; Massardi, M.; Mauch, T.; Michalowski, M.; Negrello, M.; Rawlings, S.; Rodighiero, G.; Samui, S.; Serjeant, S.; Vieira, J.; White, G.J.; Amblard, A.; Auld, R.; Baes, M.; Bonfield, D.; Burgarella, D.; Cava, A.; Clements, D.; Dariush, A.; Dye, S.; Frayer, D.; Fritz, J.; Ibar, E.; Ivison, R.J.; Lagache, G.; Maddox, S.; Pascale, E.; Pohlen, M.; Rigby, E.; Sibthorpe, B.; Smith, Daniel; Temi, P.; Thompson, M.A.; Valtchanov, I.; Verma, A. (2010)
      To investigate the poorly constrained sub-mm counts and spectral properties of blazars we searched for these in the Herschel-ATLAS (H-ATLAS) science demonstration phase (SDP) survey catalog.

We cross-matched 500 μm sources ...

    • Herschel-ATLAS: far-infrared properties of radio-selected galaxies 

      Hardcastle, M.J.; Virdee, J.S.; Jarvis, M.J.; Bonfield, D.; Dunne, L.; Rawlings, S.; Stevens, J. A.; Christopher, N. M.; Heywood, I.; Mauch, Tom; Rigopoulou, D.; Verma, A.; Baldry, Ivan K.; Bamford, S. P.; Buttiglione, S.; Cava, A.; Clements, D. L.; Cooray, A.; Croom, S. M.; Dariush, A.; de Zotti, G.; Eales, S.; Fritz, J.; Hill, D. T.; Hughes, D.; Hopwood, R.; Ibar, E.; Ivison, Rob J.; Jones, D.H.; Loveday, J.; Maddox, S. J.; Michalowski, M. J.; Negrello, M.; Norberg, P.; Pohlen, M.; Prescott, M.; Rigby, E. E.; Robotham, A. S. G.; Rodighiero, G.; Scott, D.; Sharp, R.; Smith, Daniel; Temi, P.; van Kampen, E. (2010)
      We use the Herschel-Astrophysical Terahertz Large Area Survey (ATLAS) science demonstration data to investigate the star formation properties of radio-selected galaxies in the GAMA-9h field as a function of radio luminosity ...