The 2dF Gravitational Lens Survey

Publications of the Astronomical Society of Australia

Daniel J. Mortlock¹ 

[1] Darren S. Madgwick

关键词: surveys;    gravitational lensing;    methods: data analysis;   

DOI  :  10.1071/AS01021

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

The 2 degree Field (2dF) galaxy redshift survey will involve obtaining spectra of approximately 2.5 105 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.

【 授权许可】

Unknown