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Browsing by Author "Willott, C.J."
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A 3 x 10 solar mass black hole in the quasar SDSS J1148+5251 at z=6.41
Willott, C.J.; McLure, R.J.; Jarvis, M.J. (2003)We present near-infrared H- and K-band spectra of the z p 6.41 quasar SDSS J114816.64 525150.3. The spectrum reveals a broad Mg ii l2799 emission line with an FWHM of 6000 km s 1. From the peak wavelength of this emission ... -
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 ... -
Cold dust emission from X-ray AGN in the SCUBA-2 Cosmology Legacy Survey : dependence on luminosity, obscuration & AGN activity
Banerji, Manda; McMahon, R.G.; Willott, C.J.; Geach, James; Harrison, C. M.; Alaghband-Zadeh, S.; Alexander, D. M.; Bourne, N.; Coppin, Kristen; Dunlop, J. S.; Farrah, D.; Jarvis, M.; Michalowski, M. J.; Page, M.; Smith, Daniel; Swinbank, A.M.; Symeonidis, M.; van der Werf, P. P. (2015-11-21)We study the 850um emission in X-ray selected AGN in the 2 sq-deg COSMOS field using new data from the SCUBA-2 Cosmology Legacy Survey. We find 19 850um bright X-ray AGN in a high-sensitivity region covering 0.89 sq-deg ... -
Deep radio imaging of the SCUBA 8-mJy survey fields: submillimetre source identifications and redshift distribution
Ivison, R.J.; Greve, T.R.; Smail, I.; Dunlop, J.S.; Roche, N.D.; Scott, S.E.; Page, M.J.; Stevens, J. A.; Almaini, O.; Blain, A.W.; Willott, C.J.; Fox, M.; Gilbank, D.G.; Serjeant, S.; Hughes, D.H. (2002-11) -
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 ... -
The hyperluminous infrared quasar 3C 318 and its implications for interpreting sub-mm detections of high-redshift radio galaxies
Willott, C.J.; Rawlings, S.; Jarvis, M.J. (2000) -
Imaging of SDSS z>6 quasar fields: gravitational lensing, companion galaxies and the host dark matter halos
Willott, C.J.; Percival, W.; Crampton, D.; Hutchings, J.B.; Jarvis, M.J.; Sawicki, M.; Simard, L.; McLure, R.J. (2005) -
Near-infrared imaging and the K-z relation for radio galaxies in the 7C redshift survey
Willott, C.J.; Rawlings, S.; Jarvis, M.J.; Blundell, K.M. (2003) -
The obscuration by dust of most of the growth of supermassive black holes
Martinez-Sansigre, A.; Rawlings, S.; Lacy, M.; Fadda, D.; Marleau, F.; Simpson, C.; Willott, C.J.; Jarvis, M.J. (2005) -
On the redshift cut-off for steep-spectrum radio sources
Jarvis, M.J.; Rawlings, S.; Willott, C.J.; Blundell, K.M.; Eales, S.; Lacy, M. (2001) -
A population of high-redshift type-2 quasars-I. Selection criteria and optical spectra
Martinez-Sansigre, A.; Rawlings, S.; Lacy, M.; Fadda, D.; Jarvis, M.J.; Marleau, F.; Simpson, C.; Willott, C.J. (2006) -
A sample of 6C radio sources designed to find objects at redshift z>4: II - spectrophotometry and emission line properties
Jarvis, M.J.; Rawlings, S.; Lacy, M.; Blundell, K.M.; Bunker, A.; Eales, S.; Saunders, R.; Spinrad, H.; Stern, D.; Willott, C.J. (2001) -
A sample of 6C radio sources designed to find objects at redshift z>4: III - imaging and the radio galaxy K-z relation
Jarvis, M.J.; Rawlings, S.; Eales, S.; Blundell, K.M.; Bunker, A.; Croft, S.; McLure, R.J.; Willott, C.J. (2001) -
A sample of radio galaxies spanning three decades in radio luminosity - I. The host-galaxy properties and black-hole masses
McLure, R.J.; Willott, C.J.; Jarvis, M.J.; Rawlings, S.; Hill, G.J.; Mitchell, E.; Dunlop, J.S.; Wold, M. (2004) -
The SCUBA-2 cosmology legacy survey : Demographics of the 450-μm population
Roseboom, I.G.; Dunlop, J.S.; Cirasuolo, M.; Geach, J.E.; Smail, I.; Halpern, M.; van der Werf, P.; Almaini, O.; Arumugam, V.; Asboth, V.; Auld, R.; Blain, A.; Bremer, M.N.; Bock, J.; Bowler, R.A.A.; Buitrago, F.; Chapin, E.; Chapman, S.; Chrysostomou, A.; Clarke, C.; Conley, A.; Coppin, Kristen; Danielson, A. L. R.; Farrah, D.; Glenn, J.; Hatziminaoglou, E.; Ibar, E.; Ivison, R.J.; Jenness, T.; van Kampen, E.; Karim, A.; Mackenzie, T.; Marsden, G.; Meijerink, R.; Michałowski, M. J.; Oliver, S.J.; Page, M.J.; Pearson, E.; Scott, D.; Simpson, J.M.; Smith, Daniel; Spaans, M.; Swinbank, A.M.; Symeonidis, M.; Targett, T.; Valiante, E.; Viero, M.; Wang, L.; Willott, C.J.; Zemcov, M. (2013-11-01)We investigate the multiwavelength properties of a sample of 450-μm-selected sources from the SCUBA-2 Cosmology Legacy Survey. A total of 69 sources were identified above 4σ in deep SCUBA-2 450-μm observations overlapping ... -
A search for the first massive galaxy clusters
Willott, C.J.; Crampton, D.; Hutchings, J.B.; Sawicki, M.; Simard, L.; Jarvis, M.J.; McLure, R.J.; Percival, W. (Springer Nature, 2005)We have obtained deep, multi-band imaging observations around three of the most distant known quasars at redshifts z > 6. Standard accretion theory predicts that the supermassive black holes present in these quasars were ...