The 2dF gravitational lens survey

Details The 2dF gravitational lens survey The 2dF gravitational lens survey

2001-03-14

arxiv.org/abs/astro-ph/0103207v1

2001, PASA, 18, 192

Astronomy and Astrophysics

Astrophysics

PASA (OzLens edition), in press; 4 pages, 0 figures

Scientific paper

10.1071/AS01021

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.

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