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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 661106.0, MPI für Astronomie / Publikationen_mpia
Galaxy scale lenses in the RCS2. I. First catalog of candidate strong lenses
Authors:Anguita, T.; Barrientos, L. F.; Gladders, M. D.; Faure, C.; Yee, H. K. C.; Gilbank, D. G.
Date of Publication (YYYY-MM-DD):2012
Journal Abbrev.:The Astrophysical Journal
Volume:748
Issue / Number:2
Start Page:id. 129
Audience:Not Specified
Abstract / Description: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 (\overline{M} \approx 5.5 × 1011 [M &sun; h -1]) and rich in dark matter (\overline{M/L} \approx 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.
Free Keywords:dark matter; galaxies: elliptical and lenticular; cD; galaxies: evolution; gravitational lensing: strong
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://cdsads.u-strasbg.fr/abs/2012ApJ...748..129A
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