SDSS J1335 0118: A new two-image gravitational lens
M Oguri, N Inada, FJ Castander, MD Gregg, RH Becker, S Ichikawa, B Pindor, J Brinkmann, DJ Eisenstein, JA Frieman, PB Hall, DE Johnston, GT Richards, PL Schechter, DP Schneider, AS Szalay
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | OXFORD UNIV PRESS | Published : 2004
We report on 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 to be a lensing galaxy. Preliminary mass modeling predicts a differential time delay, δt of ∼ 30h-1 day, assuming the redshift of the lens galaxy to be 0.5.