Discovery of four gravitational lensing systems by clusters in the SDSS DR6

Details Discovery of four gravitational lensing systems by clusters in the SDSS DR6 Discovery of four gravitational lensing systems by clusters in the SDSS DR6

2008-12-10

arxiv.org/abs/0812.1860v8

Astronomy and Astrophysics

Astrophysics

6 pages, 3 figures. Added reference

Scientific paper

10.1088/1674-4527/9/1/002

We report the discovery of 4 strong gravitational lensing systems by visual inspections of the Sloan Digital Sky Survey images of galaxy clusters in Data Release 6 (SDSS DR6). Two of the four systems show Einstein rings while the others show tangential giant arcs. These arcs or rings have large angular separations (>8") from the bright central galaxies and show bluer color compared with the red cluster galaxies. In addition, we found 5 probable and 4 possible lenses by galaxy clusters.

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