THE SDSS DISCOVERY OF A STRONGLY LENSED POST-STARBURST GALAXY AT z=0.766

We present the first result of a survey for strong galaxy-galaxy lenses in Sloan Digital Sky Survey (SDSS) images. SDSS J082728.70+223256.4 was selected as a lensing candidate using selection criteria based on the color and positions of objects in the SDSS photometric catalog. Follow-up imaging and spectroscopy showed this object to be a lensing system. The lensing galaxy is an elliptical at z = 0.349 in a galaxy cluster. The lensed galaxy has the spectrum of a poststarburst galaxy at z = 0.766. The lensing galaxy has an estimated mass of ∼ 1.2× 10 M⊙ and the corresponding mass to light ratio in the B-band is ∼ 26 M⊙/L⊙ inside 1.1 effective radii of the lensing galaxy. Our study shows how catalogs drawn from multi-band surveys can be used to find strong galaxy-galaxy lenses having multiple lens images. Our strong lensing candidate selection based on photometry-only catalogs will be useful in future multi-band imaging surveys such as SNAP and LSST. Subject headings: gravitational lensing — galaxies