Daniel J. Mortlock, Darren S. Madgwick, Ofer Lahav, PASA, 18 (2), in press.
Next Section: Introduction
The 2dF gravitational lens survey
Daniel J. Mortlock1,2
Darren S. Madgwick1
Ofer Lahav1
1 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, United Kingdom
mortlock@ast.cam.ac.uk, dsm@ast.cam.ac.uk, lahav@ast.cam.ac.uk
2 Astrophysics Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom
Abstract:
2.5 x 105 objects which have previously been 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 either cross-correlation techniques or principal components analysis should be able to identify candidates systematically. With the 2dF survey approximately half-completed it is now viable to begin a methodical search for these spectroscopic lenses, and the first steps of this project are described here.
Keywords: surveys - gravitational lensing - methods: data analysis
- Introduction
- The 2dF galaxy redshift survey
- Lens statistics
- The 2dF gravitational lens survey
- Conclusions
- Acknowledgements
- References
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б© Copyright Astronomical Society of Australia 1997