Five New High-Redshift Quasar Lenses from the Sloan Digital Sky Survey

Abstract

We report the discovery of five gravitationally lensed quasars from the Sloan Digital Sky Survey (SDSS). All five systems are selected as two-image lensed quasar candidates from a sample of high-redshift (z>2.2) SDSS quasars. We confirmed their lensing nature with additional imaging and spectroscopic observations. The new systems are SDSS J0819+5356 (source redshift z_s=2.237, lens redshift z_l=0.294, and image separation θ=4.04"), SDSS J1254+2235 (z_s=3.626, θ=1.56"), SDSS J1258+1657 (z_s=2.702, θ=1.28"), SDSS J1339+1310 (z_s=2.243, θ=1.69"), and SDSS J1400+3134 (z_s=3.317, θ=1.74"). We estimate the lens redshifts of the latter four systems to be z_l=0.2-0.8 from the colors and magnitudes of the lensing galaxies. We find that the image configurations of all systems are well reproduced by standard mass models. Although these lenses will not be included in our statistical sample of z_s<2.2 lenses, they expand the number of lensed quasars which can be used for high-redshift galaxy and quasar studies.

25 pages, 5 figures, 6 tables, accepted for publication in AJ; see http://www-utap.phys.s.u-tokyo.ac.jp/~sdss/sqls/ for an up-to-date status of the SQLS

References in corpus (13)

• The 2.5 m Telescope of the Sloan Digital Sky Survey
• The Sloan Digital Sky Survey Quasar Catalog IV. Fifth Data Release
• Gravitational Lens Time Delays: A Statistical Assessment of Lens Model Dependences and Implications for the Global Hubble Constant
• The Sloan Digital Sky Survey Quasar Lens Search. I. Candidate Selection Algorithm
• The Spatial Structure of An Accretion Disk
• The Sloan Digital Sky Survey Quasar Lens Search. II. Statistical Lens Sample from the Third Data Release
• The Sloan Digital Sky Survey Quasar Lens Search. III. Constraints on Dark Energy from the Third Data Release Quasar Lens Catalog
• Magnetic fields in massive star forming regions
• COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses VI. Redshift of the lensing galaxy in seven gravitationally lensed quasars
• Discovery of Four Gravitationally Lensed Quasars from the Sloan Digital Sky Survey
• A New Quadruply Lensed Quasar: SDSSJ125107.57+293540.5
• Constraints on the velocity profiles of galaxies from strong lensing statistics and semi-analytical modelling of galaxy formation
• The SDSS Discovery of a Strongly Lensed Post-Starburst Galaxy at z=0.766

Cited by in corpus (2)

• The Sloan Digital Sky Survey Quasar Lens Search. IV. Statistical Lens Sample from the Fifth Data Release
• Strong Lensing by Subhalos in the Dwarf-Galaxy Mass Range II: Detection Probabilities