Survey of Gravitationally-lensed Objects in HSC Imaging (SuGOHI). IV.
  Lensed quasar search in the HSC survey
  Strong gravitationally lensed quasars provide powerful means to study galaxy
evolution and cosmology. We use Chitah to hunt for new lens systems in the
Hyper Suprime$-$Cam Subaru Strategic Program (HSC SSP) S16A. We present 46 lens
candidates, of which 3 are previously known. Including 2 additional lenses
found by YattaLens, we obtain X-shooter spectra of 6 promising candidates for
lens confirmation and redshift measurements. We report new spectroscopic
redshift measurements for both the lens and source galaxies in 4 lens systems.
We apply the lens modeling software Glee to model our 6 X-shooter lenses
uniformly. Through our analysis of the HSC images, we find that
HSCJ022622$-$042522, HSCJ115252$+$004733, and HSCJ141136$-$010216 have
point-like lensed images, and that the lens light distribution is well aligned
with mass distribution within 6 deg. Thanks to the X-shooter spectra, we
estimate fluxes on the Baldwin- Phillips-Terlevich (BPT) diagram, and find that
HSCJ022622$-$042522 has a probable quasar source, based on the upper limit of
the Nii flux intensity. We also measure the FWHM of Ly$\alpha$ emission of
HSCJ141136$-$010216 to be $\sim$254 km/s, showing that it is a probable
Lyman-$\alpha$ emitter.
