Galaxy Scale Lenses In The Rcs2. I. First Catalog Of Candidate Strong Lenses
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 less than or similar to z less than or similar to 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 ((M) over bar approximate to 5.5 x 10(11) [M-circle dot h(-1)]) and rich in dark matter ((M/L) over bar approximate to 14 [M-circle dot/L-circle dot, 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.
Keywords: dark matter ; galaxies: elliptical and lenticular, cD ; galaxies: evolution ; gravitational lensing: strong ; Giant Arcs Survey ; Gravitational Lens ; Cosmic Evolution ; Acs Survey ; Mass ; Dark ; Substructure ; Statistics ; Field ; Constraints
Record created on 2012-05-04, modified on 2016-08-09