http://arxiv.org/abs/1702.03942
We report the discovery of the quadruply lensed quasar J1433+6007, mined in the SDSS DR12 photometric catalogues using a novel outlier-selection technique, without prior spectroscopic or UV excess information. Discovery data obtained at the Nordic Optical telescope (NOT, La Palma) show nearly identical quasar spectra at $z_s=2.74$ and four quasar images in a fold configuration, one of which sits on a blue arc. The deflector redshift is $z_{l}=0.407,$ from Keck-ESI spectra. We describe the selection procedure, discovery and follow-up, image positions and $BVRi$ magnitudes, and first results and forecasts from simple lens models.
A. Agnello, C. Grillo, T. Jones, et. al.
Wed, 15 Feb 17
41/47
Comments: MNRAS submitted, 5 pages, 3 figures. Based on observations at Nordic Optical Telescope (La Palma) and Keck Telescope (Hawaii)
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