The 2dF gravitational lens survey
Abstract
The 2 degree Field (2dF) galaxy redshift survey will involve obtaining approximately 2.5 x 10^5 spectra of objects previously identified as galaxy candidates on morphological grounds. Included in these spectra should be about ten gravitationally-lensed quasars, all with low-redshift galaxies as deflectors (as the more common lenses with high-redshift deflectors will be rejected from the survey as multiple point-sources). The lenses will appear as superpositions of galaxy and quasar spectra, and both cross-correlation techniques and principal components analysis should be able to identify candidates systematically. With the 2dF survey approximately half-completed it is now viable to begin a systematic search for these spectroscopic lenses, and the first steps of this project are described here.
Cite
@article{arxiv.astro-ph/0103207,
title = {The 2dF gravitational lens survey},
author = {Daniel J. Mortlock and Darren S. Madgwick and Ofer Lahav},
journal= {arXiv preprint arXiv:astro-ph/0103207},
year = {2009}
}
Comments
PASA (OzLens edition), in press; 4 pages, 0 figures