NOAO >   Observing Info >   Approved Programs >   2009A-0222

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Proposal Information for 2009A-0222


PI: Elizabeth Buckley-Geer, Fermilab, buckley@fnal.gov
Address: MS 127, P.O. Box 500, Batavia, IL 60137, USA

CoI: Huan Lin, Fermilab
CoI: Sahar Allam, Fermilab
CoI: Jeff Kubo, Fermilab
CoI: Tom Diehl, Fermilab
CoI: Douglas Tucker, Fermilab
CoI: Donna Kubik, Fermilab
CoI: Jim Annis, Fermilab

Title: An Imaging and Spectroscopic Survey of Bright Strongly-Lensed Galaxies in the SDSS

Abstract: We propose for WIYN imaging and Mayall spectroscopic follow-up for a sample of 21 very bright, candidate strong lensing systems from the Sloan Digital Sky Survey (SDSS), found as part of our systematic search for potentially lensed bright blue arcs and knots around luminous red galaxies from the SDSS. Our survey has already spectroscopically confirmed 12 strong lensing systems, including 6 among the brightest lensed Lyman break galaxies known at z > 2, including the ``8 o'clock arc.'' We will take advantage of the excellent WIYN image quality to obtain gri color data vital to derive optimal lensing models for our systems, and we also take advantage of the brightness of our lensed galaxies, whose redshifts may be efficiently measured on the Mayall 4m. Overall, we expect to compile a final sample of order 30 spectroscopically confirmed SDSS lensing systems, a large data set which allows us to expand our ongoing follow-up studies of the physical properties of individual bright lensed star-forming galaxies at high redshifts z ~ 1-3. Moreover, this larger sample allows us to better constrain the mass distributions of the group/cluster environments around our z ~ 0.4 red lens galaxies, in a 3''-10'' Einstein radius regime that is complementary to the smaller single- galaxy and larger galaxy-cluster scales probed by other SDSS strong lens data sets.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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