activity
19952020
most citedThe UKIRT Infrared Deep Sky Survey (UKIDSS)

2.5k citations · 8.2k across the 50 of their papers we have counts for

collaborators

50 papers

astro-ph.GA2020★ 4 cited

The local vertical density distribution of ultracool dwarfs M7 to L2.5 and their luminosity function

Stephen Warren, Saad Ahmed, Richard Laithwaite

We investigate the form of the local vertical density profile of the stars in the Galactic disk, close to the Galactic plane. We use a homogeneous sample of 34000 ultracool dwarfs…

astro-ph.GA2020★ 4 cited

A complete search for redshift z>6.5 quasars in the VIKING survey

R. Barnett, S. J. Warren, N. J. G. Cross +4

We present the results of a new, deeper, and complete search for high-redshift quasars over 977deg of the VISTA Kilo-Degree Infrared Galaxy (VIKING) survey. This ex…

astro-ph.GA2020★ 9 cited

Galaxy mass profiles from strong lensing III: The two-dimensional broken power-law model

Conor M. O'Riordan, Stephen J. Warren, Daniel J. Mortlock

When modelling strong gravitational lenses, i.e., where there are multiple images of the same source, the most widely used parameterisation for the mass profile in the lens galaxy…

astro-ph.SR2020★ 6 cited

The absolute magnitudes , the binary fraction, and the binary mass ratios of M7 to M9.5 dwarfs

R. C. Laithwaite, S. J. Warren

We use the large homogeneous sample of late M dwarfs, M7 to M9.5, of Ahmed & Warren (2019) matched to DR2, to measure the relation between absolute magnitude and sp…

astro-ph.GA2020★ 14 cited

Galaxy mass profiles from strong lensing II: The elliptical power-law model

Conor M. O'Riordan, Stephen J. Warren, Daniel J. Mortlock

We present a systematic analysis of the constraints on the mass profile slope obtainable when fitting a singular power-law ellipsoid model to a typical strong lensing obs…

astro-ph.GA2019★ 82 cited

Euclid preparation: V. Predicted yield of redshift 7<z<9 quasars from the wide survey

Euclid Collaboration, R. Barnett, S. J. Warren +126

We provide predictions of the yield of quasars from the Euclid wide survey, updating the calculation presented in the Euclid Red Book in several ways. We account for revisi…