Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-01-12
Astrophys.J.660:1176-1185,2007
Astronomy and Astrophysics
Astrophysics
34 pages,8 Fig. Accepted ApJ:Jan-2007
Scientific paper
10.1086/512599
We present the results of a search for gravitationally-lensed giant arcs conducted on a sample of 825 SDSS galaxy clusters. Both a visual inspection of the images and an automated search were performed and no arcs were found. This result is used to set an upper limit on the arc probability per cluster. We present selection functions for our survey, in the form of arc detection efficiency curves plotted as functions of arc parameters, both for the visual inspection and the automated search. The selection function is such that we are sensitive only to long, high surface brightness arcs with g-band surface brightness mu_g < 24.8 and length-to-width ratio l/w > 10. Our upper limits on the arc probability are compatible with previous arc searches. Lastly, we report on a serendipitous discovery of a giant arc in the SDSS data, known inside the SDSS Collaboration as Hall's arc.
Allam Sahar S.
Annis James
Diehl Thomas H.
Estrada J. J.
Hall Patrick B.
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