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Using the 6dF Galaxy Redshift Survey to Detect Gravitationally-lensed Quasars

Published online by Cambridge University Press:  05 March 2013

Daniel J. Mortlock  and
Michael J. Drinkwater
Daniel J. Mortlock
Affiliation:
Astrophysics Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom; mortlock@ast.cam.ac.uk Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, United Kingdom
Michael J. Drinkwater
Affiliation:
School of Physics, University of Melbourne, Vic 3052, Australia; mdrinkwa@physics.unimelb.edu.au
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Abstract

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It is possible to detect gravitationally-lensed quasars spectroscopically if the spectra obtained during galaxy surveys are searched for the presence of quasar emission lines. The up-coming 6 degree Field (6dF) redshift survey on the United Kingdom Schmidt Telescope will involve obtaining ~105 spectra of near-infrared selected galaxies to a magnitude limit of K = 13. Applying previously developed techniques implies that at least one lens should be discovered in the 6dF survey, but that as many as ten could be found if quasars typically have B J – K ~ 8. In this model there could be up to fifty lensed quasars in the sample, but most of them could only be detected by infrared spectroscopy.

Keywords

gravitational lensingsurveysmethods: data analysis

Information

Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 18 , Issue 2 , 2001 , pp. 195 - 197
Copyright
Copyright © Astronomical Society of Australia 2001

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