* Astronomy

Title: Discovery and first models of the quadruply lensed quasar SDSS J1433+6007
Author: Adriano Agnello, Claudio Grillo, Tucker Jones, Tommaso Treu, Mario Bonamigo, Sherry H. Suyu

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 zs=2.74 and four quasar images in a fold configuration, one of which sits on a blue arc. The deflector redshift is zl=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.

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