Discovery of a redshift 6.13 quasar in the UKIRT Infrared Deep Sky Survey (2008)
Mortlock, D. J., Patel, M., Warren, S. J., Venemans, B. P., McMahon, R. G., Hewett, P. C., ...
Optical and near-infrared (NIR) spectra are presented for ULAS J131911.29+095951.4 (hereafter ULAS J1319+0950), a new redshift z = 6.127 +/- 0.004 quasar discovered in the Third Data Release (DR3) of...
Fifteen new T dwarfs discovered in the UKIDSS Large Area Survey (2008)
Pinfield, D. J., Burningham, B., Tamura, M., Leggett, S. K., Lodieu, N., Lucas, P. W., ...
We present the discovery of fifteen new T2.5-T7.5 dwarfs (with estimated distances between ~24-93pc, identified in the first three main data releases of the UKIRT Infrared Deep Sky Survey. This...
Models of the Cosmic Horseshoe Gravitational Lens (2008)
Dye, Simon, Evans, N. W., Belokurov, V., Warren, S. J., Hewett, P.
We model the extremely massive and luminous lens galaxy in the Cosmic Horseshoe Einstein ring system, recently discovered in the Sloan Digital Sky Survey. We use the semi-linear method of Warren &...
Luminous K-band Selected Quasars from UKIDSS (2008)
Maddox, Natasha, Hewett, Paul C., Warren, S. J., Croom, S. M.
The largest K-band flux-limited sample of luminous quasars to date has been constructed from the UKIDSS Large Area Survey Early Data Release, covering an effective area of 12.8 deg^2. Exploiting the...
Properties of the Coolest Dwarfs. (2008)
Leggett, S., Freedman, R., Geballe, T., Golimowski, D., Lodieu, N., Marley, M., ...
The WFCAM Science Archive (2007)
Hambly, N. C., Collins, R. S., Cross, N. J. G., Mann, R. G., Read, M. A., Sutorius, E. T. W., ...
We describe the WFCAM Science Archive (WSA), which is the primary point of access for users of data from the wide-field infrared camera WFCAM on the United Kingdom Infrared Telescope (UKIRT),...
A very cool brown dwarf in UKIDSS DR1 (2007)
Warren, S. J., Mortlock, D. J., Leggett, S. K., Pinfield, D. J., Homeier, D., Dye, S., ...
(abridged) We report the discovery of a very cool brown dwarf, ULAS J003402.77-005206.7 (ULAS J0034-00), identified in UKIDSS DR1. We provide optical, near-infrared, and mid-infrared photometry of...
Eight new T4.5-T7.5 dwarfs discovered in the UKIDSS Large Area Survey Data Release 1 (2007)
Lodieu, N., Pinfield, D. J., Leggett, S. K., Jameson, R. F., Mortlock, D. J., Warren, S. J., ...
We present eight new T4.5-T7.5 dwarfs identified in the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) Data Release 1 (DR1). In addition we have recovered the T4.5 dwarf SDSS...
The UKIRT Infrared Deep Sky Survey Second Data Release (2007)
Warren, S. J., Cross, N. J. G., Dye, S., Hambly, N. C., Almaini, O., Edge, A. C., ...
The UKIRT Infrared Deep Sky Survey (UKIDSS) is a set of five large near-infrared surveys, covering a complementary range of areas, depths, and Galactic latitudes. The UKIDSS Second Data Release (DR2)...
The UKIRT infrared deep sky survey first data release. (2007)
Warren, S.J., Hambly, N.C., Dye, S., Almaini, O., Cross, N.J.G., Edge, A.C., ...
Eight new T4.5-T7.5 dwarfs discovered in the UKIDSS large area survey data release 1. (2007)
Lodieu, N., Pinfield, D.J., Leggett, S., Jameson, R.F., Mortlock, D.J., Warren, S.J.
A very cool brown dwarf in UKIDSS DR1. (2007)
Warren, S.J., Mortlock, D.J., Leggett, S., Pinfield, D.J., Homeier, D., Dye, S., ...
The discovery of the first luminous z~6 quasar in the UKIDSS Large Area Survey (2006)
Venemans, B. P., McMahon, R. G., Warren, S. J., Gonzalez-Solares, E. A., Hewett, P. C., Mortlock, D. J., ...
We present the initial results from our search for high redshift, z > 6, quasars using near infrared data from the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS). Our analysis of 106...
The UKIRT infrared deep sky survey early data release (2006)
Dye, S., Warren, S.J., Hambly, N.C., Cross, N.J.G., Hodgkin, S.T., Irwin, M.J., ...
This paper defines the UKIRT Infrared Deep Sky Survey (UKIDSS) Early Data Release (EDR). UKIDSS is a set of five large near-infrared surveys being undertaken with the United Kingdom Infrared...
The UKIRT Infrared Deep Sky Survey First Data Release (2006)
Warren, S. J., Hambly, N. C., Dye, S., Almaini, O., Cross, N. J. G., Edge, A. C., ...
The First Data Release (DR1) of the UKIRT Infrared Deep Sky Survey (UKIDSS) took place on 2006 July 21. UKIDSS is a set of five large near-infrared surveys, covering a complementary range of areas,...
The UKIRT Infrared Deep Sky Survey (UKIDSS) (2006)
Lawrence, A., Warren, S. J., Almaini, O., Edge, A. C., Hambly, N. C., Jameson, R. F., ...
We describe the goals, design, implementation, and initial progress of the UKIRT Infrared Deep Sky Survey (UKIDSS), a seven year sky survey which began in May 2005, using the UKIRT Wide Field Camera....
The UKIRT Infrared Deep Sky Survey Early Data Release (2006)
Dye, S., Warren, S. J., Hambly, N. C., Cross, N. J. G., Hodgkin, S. T., Irwin, M. J., ...
This paper defines the UKIRT Infrared Deep Sky Survey (UKIDSS) Early Data Release (EDR). UKIDSS is a set of five large near-infra-red surveys defined by Lawrence et al. (2006), being undertaken with...
The OLS-lens survey: The discovery of five new galaxy-galaxy strong lenses from the SDSS (2006)
Willis, J. P., Hewett, P. C., Warren, S. J., Dye, S., Maddox, N.
Bright galaxy-galaxy strong lenses are much more powerful than lensed quasars for measuring the mass profiles of galaxies, but until this year only a handful have been known. Here we present five new...
The discovery of two new galaxy-galaxy lenses from the SDSS (2005)
Willis, J. P., Hewett, P. C., Warren, S. J.
The gravitational lens configuration where a background galaxy is closely aligned with a foreground galaxy, can provide accurate measurement of the dark matter density profile in the foreground...
Clewley, L., Warren, S. J., Hewett, P. C., Norris, John. E., Wilkinson, M. I., Evans, N. W.
We present VLT-FORS1 spectra of a sample of 34 faint 20.0 < g* < 21.1 A-type stars selected from the Sloan Digital Sky Survey Early Data Release, with the goal of measuring the velocity dispersion of...
The first detection of [OIII] emission from high-redshift damped Lyman-alpha galaxies (2005)
Weatherley, S. J., Warren, S. J., Moller, P., Fall, S. M., Fynbo, J. U., Croom, S. M.
We present the detection of [OIII] emission lines from the galaxies responsible for two high-redshift z>1.75 damped Lyman-alpha (DLA) absorption lines. These are the first detections of rest-frame...
Reanalysis of the spectrum of the z=10 galaxy (2004)
Weatherley, S. J., Warren, S. J., Babbedge, T. S. R.
In a recent paper Pello et al. reported observations of a faint galaxy, gravitationally lensed by the galaxy cluster Abell 1835. Deep J-band spectroscopy revealed a weak emission line near 1.34...
Clewley, L., Warren, S. J., Hewett, P. C., Norris, John E., Evans, N. W.
This is the second in a series of papers presenting a new calculation of the mass of the Galaxy based on radial velocities and distances for a sample of faint 16 < B < 21.3 field blue...
Mapping the Remote Milky Way Halo using BHB stars at 70 < r < 130 kpc (2003)
Clewley, L., Warren, S. J., Hewett, P. C., Wilkinson, M., Evans, W. N.
We increase the number of remote halo tracers by using blue horizontal branch (BHB) stars out to Galactocentric distances of 130 kpc. We use SDSS EDR photometry and the VLT to detect 16 BHB stars at...
Ghosts of the Milky Way: a search for topology in new quasar catalogues (2003)
Weatherley, S. J., Warren, S. J., Croom, S. M., Smith, R. J., Boyle, B. J., Shanks, T., ...
We revisit the possibility that we inhabit a compact multi-connected flat, or nearly-flat, Universe. Analysis of COBE data has shown that, for such a case, the size of the fundamental domain must be...
Luminous early-type field galaxies at z ~ 0.4 - II. Star-formation history and space density (2002)
Willis, J. P., Hewett, P. C., Warren, S. J., Lewis, G. F.
We present a combined photometric and spectroscopic analysis of the star formation history and space density of a sample of 485 luminous, M_V - 5 log h < -20.5, field early-type galaxies at redshifts...
Distant field BHB stars and the mass of the Galaxy I: Classification of halo A-type stars (2002)
Clewley, L., Warren, S. J., Hewett, P. C., Norris, John E., Peterson, R. C., Evans, N. W.
This is the first in a series of three papers presenting a new calculation of the mass of the Galaxy based on radial velocities and distances measured for a sample of some 100 faint 16 < B < 20 field...
Are high-redshift DLA galxies Lyman-break galaxies? (2002)
Møller, P., Warren, S. J., Fall, S. M., Fynbo, J. U., Jakobsen, P.
We use deep HST STIS and NICMOS images of three spectroscopically confirmed galaxy counterparts of high-redshift damped Ly-alpha (DLA) absorbers (one of which is a new discovery) to test the...
Croom, Scott M., Warren, S. J., Glazebrook, K.
In this paper we present preliminary spectroscopic results from a small area faint K-excess (KX) survey, and compare KX selection against UVX selection. The aim of the KX method is to produce...
NICMOS imaging search for damped Lya galaxies (2001)
Warren, S. J., Moller, P., Fall, S. M., Jakobsen, P.
We are engaged in a programme of imaging with the STIS and NICMOS (NIC2) instruments aboard the Hubble Space Telescope (HST), to search for the galaxy counterparts of 18 high-redshift z>1.75 damped...
Willis, J. P., Hewett, P. C., Warren, S. J.
We have compiled a sample of $\sim 9600$ bright, $i\le 18.95$, red, $b_j-r>2$, candidate galaxies in an area of 220 deg$^2$. These are luminous, $L > L^*$, field early-type galaxies with redshifts...
A spectroscopic survey for strong galaxy-galaxy lenses (2000)
Willis, J. P., Hewett, P. C., Warren, S. J., Lewis, G. F.
We present a spectroscopic survey for strong galaxy-galaxy lenses. Exploiting optimal sight-lines to massive, bulge-dominated galaxies at redshifts $z \sim 0.4$ with wide-field, multifibre...
A microlensing search for cold molecular clouds in Virgo (2000)
Tadros, H, Warren, S J, Hewett, P C
We report preliminary results from a first season of photometric monitoring of 600 quasars behind the Virgo galaxy cluster with the aim of detecting microlensing by the cluster dark matter. Our...
The KX method for producing K-band flux-limited samples of quasars (1999)
Warren, S. J., Hewett, P. C., Foltz, C. B.
The longstanding question of the extent to which the quasar population is affected by dust extinction, within host galaxies or galaxies along the line of sight, remains open. More generally, the...
The PMN Selected Survey for Southern Gravitational Lenses (1999)
Prouton, O. R., Warren, S. J., Wright, A. E.
We are surveying the region -87 < delta < -38.5 for multiple imaging at scales 1 < theta < 15 arsec. Candidate gravitational lenses were selected from an existing dataset of Australia Telescope...
A VLT colour image of the optical Einstein ring 0047-2808 (1999)
Warren, S. J., Lewis, G. F., Hewett, P. C., Moller, P., Shaver, P., Iovino, A.
The optical Einstein ring 0047-2808 was imaged by the VLT UT1 during the science verification programme. The ring is the image of a high-redshift z=3.595 star-forming galaxy, with strong Ly-alpha...
Fynbo, J. U., Moller, P., Warren, S. J.
The number of damped Ly-alpha absorbers (DLAs) currently known is about 100, but our knowledge of their sizes and morphologies is still very sparse as very few have been detected in emission. Here we...
Spectroscopy of the optical Einstein ring 0047-2808 (1998)
Warren, S. J., Iovino, A., Hewett, P. C., Shaver, P. A.
We present optical and near-infrared spectroscopic observations of the optical Einstein ring 0047-2808. We detect both [OIII] lines 4959, 5007 near 2.3 micron, confirming the redshift of the lensed...
Intergalactic Stars in the Fornax Cluster (1997)
We have identified ten candidate intergalactic planetary nebulae in the Fornax galaxy cluster. These objects were found during observations in 1992 and 1993 in three fields chosen well away from any...
Intergalactic stars in the Fornax Cluster (1996)
We have identified ten candidate intergalactic planetary nebulae in the Fornax galaxy cluster. These objects were found during observations in 1992 and 1993 in three fields chosen well away from any...
On Near-Infrared H-Alpha Searches for High-Redshift Galaxies (1995)
Bunker, A. J., Warren, S. J., Hewett, P. C., Clements, D. L.
The lack of success of Lyman-alpha searches for high-redshift (z>2) field galaxies may be due to extinction by dust, suggesting that surveys based on lines of longer wavelength, particularly H-alpha,...