SDSS J1335+0118: A New Two-Image Gravitational Lens
Masamune Oguri, Naohisa Inada, Francisco J. Castander, Michael D. Gregg, Robert H. Becker, Shin-Ichi Ichikawa, Bartosz Pindor, Jonathan Brinkmann, Daniel J. Eisenstein, Joshua A. Frieman, Patrick B. Hall, David E. Johnston, Gordon T. Richards, Paul L. Schechter, Donald P. Schneider, Alexander S. Szalay
Abstract
We report the discovery of the two-image gravitationally lensed quasar SDSS J1335+0118. The object was selected as a lens candidate from the Sloan Digital Sky Survey. The imaging and spectroscopic follow-up observations confirm that the system exhibits two gravitationally lensed images of a quasar at z=1.57. The image separation is 1.56''. We also detect an extended component between the two quasar images, likely the lensing galaxy. Preliminary mass modeling predicts the differential time delay Δt ~ 30 h-1 day assuming the redshift of the lens galaxy is 0.5.
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