CGRaBS: An All-Sky Survey of Gamma-Ray Blazar Candidates (2007)
Healey, Stephen E., Romani, Roger W., Cotter, Garret, Michelson, Peter F., Schlafly, Edward F., Readhead, Anthony C. S., ...
We describe a uniform all-sky survey of bright blazars, selected primarily by their flat radio spectra, that is designed to provide a large catalog of likely gamma-ray AGN. The defined sample has...
Spectroscopic follow-up of a cluster candidate at z = 1.45 (2007)
Van Breukelen, Caroline, Cotter, Garret, Rawlings, Steve, Readhead, Tony, Bonfield, David, Clewley, Lee, ...
We have obtained deep optical spectroscopic data of the highest-redshift cluster candidate (z ~ 1.4, CVB13) selected by Van Breukelen et al. (2006) in a photometric optical/infrared catalogue of the...
Deep spectroscopy of 9C J1503+4528: a very young CSS radio source at z=0.521 (2006)
Inskip, K. J., Lee, D., Cotter, Garret, Pearson, T. J., Readhead, A. C. S., Bolton, R. C., ...
9C J1503+4528 is a very young CSS radio galaxy, with an age of order 10^4 years. This source is therefore an ideal laboratory for the study ofthe intrinsic host galaxy/IGM properties, interactions...
Deep spectroscopy of a young radio source at z=0.521 (2005)
Inskip, K. J., Lee, D., Cotter, Garret, Readhead, A. C. S., Pearson, T. J.
9C J1503+4528 is a very young CSS radio galaxy, with an age of order 10^4 years. This source is an ideal laboratory for the study of the intrinsic host galaxy/IGM properties, radio source...
Vigorous star formation in a bulge-dominated ERO at z = 1.34 (2005)
Cotter, Garret, Simpson, Chris, Bolton, Rosemary C.
We present near-IR spectroscopy of three Extremely Red Objects (EROs) using the OHS/CISCO spectrograph at Subaru telescope. One target exhibits a strong emission line which we identify as H-alpha at...
MRC B1221-423: a compact steep-spectrum radio source in a merging galaxy (2004)
Johnston, Helen M., Hunstead, Richard W., Cotter, Garret, Sadler, Elaine M.
We present BVRIK images and spectroscopic observations of the z=0.17 host galaxy of the compact steep-spectrum radio source MRC B1221-423. This is a young (~1e5 yr) radio source with double lobes...
The death of FRII radio sources and their connection with radio relics (2002)
Kaiser, Christian R., Cotter, Garret
Radio relic sources in galaxy clusters are often described as the remnants of powerful radio galaxies. Here we develop a model for the evolution of such relics after the jets cease to supply energy...
The death of FR II radio sources and their connection with radio relics (2002)
Kaiser, Christian R., Cotter, Garret
Radio relic sources in galaxy clusters are often described as the remnants of powerful radio galaxies. Here we develop a model for the evolution of such relics after the jets cease to supply energy...
Detection of a CMB decrement towards a cluster of mJy radiosources (2001)
Cotter, Garret, Buttery, Helen J., Rawlings, Steve, Croft, Steve, Hill, Gary J., Gay, Pamela, ...
We present the results of radio, optical and near-infrared observations of the field of TOC J0233.3+3021, a cluster of milliJansky radiosources from the TexOx Cluster survey. In an observation of...
Stellar populations in the nuclear regions of nearby radiogalaxies (2001)
Aretxaga, Itziar, Terlevich, Elena, Terlevich, Roberto, Cotter, Garret, Diaz, Angeles
We present optical spectra of the nuclei of seven luminous (P(178MHz) > 10**25 W Hz**(-1) Sr**(-1)) nearby (z
Kneissl, Ruediger, Jones, Michael E., Saunders, Richard, Eke, Vincent R., Lasenby, Anthony N., Grainge, Keith, ...
We discuss prospects for cluster detection via the Sunyaev-Zel'dovich (SZ) effect in a blank field survey with the proposed interferometer array, the Arcminute MicroKelvin Imager (AMI). Clusters of...
Completeness and confusion in the identification of Lyman-break galaxies (1999)
Cotter, Garret, Haynes, Toby, Baker, Joanne C., Jones, Michael E., Saunders, Richard
We have carried out a study to simulate distant clusters of galaxies in deep ground-based optical images. We find that when model galaxies are added to deep images obtained with the William Herschel...
Detection of a CMB decrement towards the (1999)
Pc+ A B, Michael E. Jones, Richard Saunders, Joanne C. Baker, Garret Cotter, Alastair Edge, ...
In a 15-GHz Ryle-Telescope observation of PC1643+4631 A & B, a pair of quasars at redshifts z = 3:79 and 3.83 separated by 198 00 on the sky, we find a decrement in the cosmic microwave background...
Haynes, Toby, Cotter, Garret, Baker, Joanne C., Eales, Steve, Jones, Michael E., Rawlings, Steve, ...
We present deep optical images of the PC1643+4631 field obtained at the WHT. This field contains two quasars at redshifts z=3.79 & 3.83 and a cosmic microwave background (CMB) decrement detected with...
Cotter, Garret, Haynes, Toby, Baker, Joanne C., Jones, Michael E., Saunders, Richard
In an investigation of the cause of the cosmic microwave background decrement in the field of the z = 3.8 quasar pair PC1643+4631, we have carried out a study to photometrically estimate the...
Deep multicolour imaging of the field towards the quasar pair PC1643+463 AB (1998)
. We present the first results of a deep imaging programme to identify the system responsible for the Cosmic Microwave Background decrement in the field towards the z = 3:8 quasar pair PC1643+4631...
Deep multicolour imaging of the field towards the quasar pair PC1643+463 A&B (1998)
We present the first results of a deep imaging programme to identify the system responsible for the Cosmic Microwave Background decrement in the field towards the z = 3.8 quasar pair PC1643+4631 A&B....
Detection of a CMB decrement towards the (1997)
Pc+ A B, Michael E. Jones, Richard Saunders, Joanne C. Baker, Garret Cotter, Alastair Edge, ...
In a 15-GHz Ryle-Telescope observation of PC1643+4631 A & B, a pair of quasars at redshifts z = 3:79 and 3.83 separated by 198 00 on the sky, we find a decrement in the cosmic microwave background...
Eales, Stephen, Rawlings, Steve, Law-Green, Duncan, Cotter, Garret, Lacy, Mark
We have obtained redshifts and infrared images for a sample of faint B2/6C radio sources whose fluxes are about six times fainter than those of sources in the bright 3C sample. We now have...
Detection of a CMB decrement towards the z = 3.8 quasar pair PC1643+4631A&B (1996)
Jones, Michael E., Saunders, Richard, Baker, Joanne C., Cotter, Garret, Edge, Alastair, Grainge, Keith, ...
In a 15-GHz Ryle-Telescope observation of PC1643+4631 A & B, a pair of quasars at redshifts z = 3.79 and 3.83 separated by 198 arcsec on the sky, we find a decrement in the cosmic microwave...
Optical and infrared investigation towards the z=3.8 quasar pair PC1643+4631A&B (1996)
Saunders, Richard, Baker, Joanne C., Bremer, Malcolm N., Bunker, Andrew J., Cotter, Garret, Eales, Steve, ...
In a companion paper (Paper I: Jones et al. 1996) we report the discovery of a cosmic microwave background decrement, indicative of a distant cluster with mass ~10^{15} solar masses, towards the...