Title: "Application of gravitational lensing models to the brightest known strongly lensed Lyman Break Galaxy"

Abstract:

We will report on modeling of the recently discovered brightest strongly lensed Lyman Break Galaxy (LBG). This galaxy is at redshift 2.73 and is lensed by a luminous red galaxy (LRG, z=0.38) in the Sloan Digital Sky Survey (SDSS) DR4 imaging data. We observe four images, three in the arc plus a counterimage. The three lensed images in the arc subtend an angle of 160 degrees around the LRG and extend over more than 9.6 arcsec in length. For the modelling we are using information from all four images extracted from SPICAM images taken on the 3.5m telescope at APO. Using the GRAVLENS package with an SIE profile we obtain a velocity dispersion of 391 km/sec for the LRG and a total magnification of about 12.