Kavli Affiliate: Paul L. Schechter
| First 5 Authors: Paul L. Schechter, Paul L. Schechter, , ,
| Summary:
A quadruply lensed source, J125856.3-031944, has been discovered using the
DELVE survey and WISE W1 – W2 colors. Followup direct imaging carried out with
the Magellan Baade 6.5 m telescope is analyzed, as is spectroscopy from the 2.5
m Nordic Optical Telescope. The lensed image configuration is kite-like, with
the major axis of the lensing galaxy along the symmetry axis of the kite, and
with the faintest image at its tail. Redward of 6000 AA the tail image is
strongly blended with the lensing galaxy. The Sloan g direct imaging carried
out with Magellan permits deblending. As the lensed image configuration is
nearly circular, simple models give high predicted magnifications for all four
images. The source’s narrow emission lines at redshift z=2.225 and low
intrinsic luminosity qualify it as a Type 2 AGN. The Magellan image shows a
substantial residual that suggests a second lensing galaxy.
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