SDSS Update

JAN Astro Image

The project is called the Sloan Bright Arcs Survey and is mostly people from Fermilab: Sahar Allam, James Annis, Tom Diehl, Josh Frieman, Liz Buckley-Geer, Jiangang Hao, Huan Lin, Marcelle Soares-Santos, and Doug Tucker. We search images of the Sloan Digital Sky Survey for objects that we think are possible strong lenses. We then confirm the objects are lenses with follow-up spectroscopy using various ground-based telescopes. So far, we’ve discovered 19 gravitational lenses. Eight of the lensed source galaxies are interesting because they’re at a high redshift z=2~3. Here’s a link to the paper:

– Jeff Kubo