Recovering The Photometry Of Brighter Than Saturated Objects In SDSS

Details Recovering The Photometry Of Brighter Than Saturated Objects In SDSS Recovering The Photometry Of Brighter Than Saturated Objects In SDSS

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.1213d&link_type=abstract

American Astronomical Society Meeting 210, #12.13; Bulletin of the American Astronomical Society, Vol. 39, p.110

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of a technique that recovers the integrity of the SDSS photometry from bright (m < 15) and/or saturated objects in the SDSS. Bright objects saturate the CCD used by the SDSS, with overabundant electrons spilling over to nearby pixels, resulting in bleed trails. The photometric pipeline should, and indeed does, effectively process these bleed trails yielding usable data. This technique filters objects based on their specific flags, and recovers the stellar locus in color-color space. Objects as bright as g = 13 were extremely well recovered, as well as much of the data down to g = 11. We used these data to search for blue, saturated objects, hoping to find bright quasars. No new quasars were discovered, but several previously known objects, including 3C 273, were. We did discover a new cataclysmic variable, demonstrating the viability of this technique in the search for new, bright objects.

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