Galaxy scale lenses in the RCS2: I. First Catalog of Candidate Strong Lenses

Details Galaxy scale lenses in the RCS2: I. First Catalog of Candidate Strong Lenses Galaxy scale lenses in the RCS2: I. First Catalog of Candidate Strong Lenses

2012-01-26

arxiv.org/abs/1201.5583v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

ApJ in press. Updated to match print version

Scientific paper

We present the first galaxy scale lens catalog from the second Red-Sequence Cluster Survey. The catalog contains 60 lensing system candidates comprised of Luminous Red Galaxy (LRG) lenses at 0.2 < z < 0.5 surrounded by blue arcs or apparent multiple images of background sources. The catalog is a valuable complement to previous galaxy-galaxy lens catalogs as it samples an intermediate lens redshift range and is composed of bright sources and lenses that allow easy follow-up for detailed analysis. Mass and mass-to-light ratio estimates reveal that the lens galaxies are massive (~5.5x10e11 M_sun/h) and rich in dark matter (~14 M_sun/L_sun,B*h). Even though a slight increasing trend in the mass-to-light ratio is observed from z=0.2 to z=0.5, current redshift and light profile measurements do not allow stringent constraints on the mass-to-light ratio evolution of LRGs.

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