Kavli Affiliate: Paul L. Schechter
| First 5 Authors: Paul L. Schechter, Dominique Sluse, Erik A. Zaborowski, Alex Drlica-Wagner, Cameron Lemon
| 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 MPIA 2.2 m and the Baade 6.5 m telescopes is analyzed, as is spectroscopy
from the 2.5 m Nordic Optical Telescope. The lensed image configuration is
kite-like, with the faintest image 2 magnitudes fainter than the other three.
Redward of 6000 AA that image is badly blended with the lensing galaxy, which
is elongated along the symmetry axis of the kite. Magellan direct imaging
carried out in Sloan g permits better deblending. As the lensed image
configuration is nearly circular, simple models give individual magnifications
of at least 25 for the 3 brighter images. The source’s narrow emission lines
and low intrinsic luminosity qualify it as a type 2 AGN.
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