Publications (5)
First lensed quasar systems from the VST-ATLAS survey: one quad, two doubles and two pairs of lensless twins
Paul L. Schechter, Nicholas D. Morgan, B. Chehade +3
We have analyzed images from the VST ATLAS survey to identify candidate gravitationally lensed quasar systems in a sample of WISE sources with W1 - W2 > 0.7. Results from followup…
Quasar lenses and pairs in the VST-ATLAS and Gaia
A. Agnello, P. L. Schechter, N. D. Morgan +10
We report on discovery results from a quasar lens search in the ATLAS public footprint, extending quasar lens searches to a regime without band or fiber-spectroscopic informati…
Two bright z > 6 quasars from VST ATLAS and a new method of optical plus mid-infra-red colour selection
A. C. Carnall, T. Shanks, B. Chehade +6
We present the discovery of two z > 6 quasars, selected as i band dropouts in the VST ATLAS survey. Our first quasar has redshift, z = 6.31 \pm 0.03, z band magnitude, z_AB = 19.63…
The VLT Survey Telescope ATLAS
T. Shanks, N. Metcalfe, B. Chehade +9
The VLT Survey Telescope (VST) ATLAS is an optical ugriz survey aiming to cover ~4700deg^2 of the Southern sky to similar depths as the Sloan Digital Sky Survey (SDSS). From reduce…
Two more, bright, z > 6 quasars from VST ATLAS and WISE
B. Chehade, A. C. Carnall, T. Shanks +10
Recently, Carnall et al. discovered two bright high redshift quasars using the combination of the VST ATLAS and WISE surveys. The technique involved using the 3-D colour plane i-z:…