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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 559259.0, MPI für Astronomie / Publikationen_mpia
The Sloan Digital Sky Survey quasar lens search. IV. Statistical lens sample from the fifth data release
Authors:Inada, Naohisa; Oguri, Masamune; Shin, Min-Su; Kayo, Issha; Strauss, Michael A.; Hennawi, Joseph F.; Morokuma, Tomoki; Becker, Robert H.; White, Richard L.; Kochanek, Christopher S.; Gregg, Michael D.; Chiu, Kuenley; Johnston, David E.; Clocchiatti, Alejandro; Richards, Gordon T.; Schneider, Donald P.; Frieman, Joshua A.; Fukugita, Masataka; Gott, J. Richard; Hall, Patrick B.; York, Donald G.; Castander, Francisco J.; Bahcall, Neta A.
Date of Publication (YYYY-MM-DD):2010
Title of Journal:The Astronomical Journal
Journal Abbrev.:The Astronomical Journal
Volume:140
Issue / Number:2
Start Page:403
End Page:415
Review Status:not specified
Audience:Experts Only
Abstract / Description:We present the second report of our systematic search for strongly lensed quasars from the data of the Sloan Digital Sky Survey (SDSS). From extensive follow-up observations of 136 candidate objects, we find 36 lenses in the full sample of 77,429 spectroscopically confirmed quasars in the SDSS Data Release 5. We then define a complete sample of 19 lenses, including 11 from our previous search in the SDSS Data Release 3, from the sample of 36,287 quasars with i < 19.1 in the redshift range 0.6 < z < 2.2, where we require the lenses to have image separations of 1'' < θ < 20'' and i-band magnitude differences between the two images smaller than 1.25 mag. Among the 19 lensed quasars, three have quadruple-image configurations, while the remaining 16 show double images. This lens sample constrains the cosmological constant to be ΩΛ = 0.84+0.06 –0.08(stat.)+0.09 –0.07(syst.) assuming a flat universe, which is in good agreement with other cosmological observations. We also report the discoveries of seven binary quasars with separations ranging from 1farcs1 to 16farcs6, which are identified in the course of our lens survey. This study concludes the construction of our statistical lens sample in the full SDSS-I data set.
Free Keywords:cosmology: observations; gravitational lensing: strong; quasars: general
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2010AJ....140..403I [ID No:1]
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