Daniel J. Mortlock, Michael J. Drinkwater, PASA, 18 (2), in press.
Next Section: Introduction
Using the 6dF galaxy redshift survey to detect gravitationally-lensed quasars
Daniel J. Mortlock1,2
Michael J. Drinkwater3
1 Astrophysics Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom
mortlock@ast.cam.ac.uk
2 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, United Kingdom
3 School of Physics, University of Melbourne, Vic 3010, Australia
mdrinkwa@physics.unimelb.edu.au
Abstract:
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 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
. 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 lensing - surveys - methods: data analysis
- PostScript (gzipped, 27.5 kilobytes)
- No PDF file available
б© Copyright Astronomical Society of Australia 1997
ASKAP
Public