A Wide-Field Survey for Lensed Quasars in the Southern Hemisphere

Details A Wide-Field Survey for Lensed Quasars in the Southern Hemisphere A Wide-Field Survey for Lensed Quasars in the Southern Hemisphere

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...202.1708m&link_type=abstract

American Astronomical Society Meeting 202, #17.08; Bulletin of the American Astronomical Society, Vol. 35, p.723

Astronomy and Astrophysics

Astronomy

Scientific paper

We describe a wide-field survey for gravitationally lensed quasars conducted with the ESO/MPG 2.2m telescope at La Silla. The imaging portion of the survey is now complete; we have obtained direct CCD images of 1000 square degrees in UBR filters using the WFI mosaic detector down to a limiting magnitude of B=21. The survey's color information and excellent spatial sampling (0.24"/pixel) allows us to identify candidate gravitational lenses with image separations as close as 0.7", with an expected discovery yield of 1 lensed quasar every 100 square degrees. Here we present a summary of the survey observations and reductions to date, and preliminary results from follow-up observations obtained with the Magellan 6.5-m telescopes at Las Campanas.

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