Kavli Affiliate: Michael D. Gladders
| First 5 Authors: Simon D. Mork, Michael D. Gladders, Gourav Khullar, Keren Sharon, Nathalie Chicoine
| Summary:
We compute parametric measurements of the Einstein-radius-enclosed total mass
for 177 cluster-scale strong gravitational lenses identified by the ChicagO
Optically-selected Lenses Located At the Margins of Public Surveys (COOL-LAMPS)
collaboration with lens redshifts ranging from $sim0.2$ to $sim1.0$ using
only two parameters: the Einstein radius and the brightest-cluster-galaxy (BCG)
redshift. We constrain the Einstein-radius-enclosed luminosity and stellar mass
by fitting parametric spectral energy distributions (SEDs) with aperture
photometry from the Dark Energy Camera Legacy Survey (DECaLS) in the $grz$ Dark
Energy Camera (DECam) filters. We find that the BCG redshift, enclosed total
mass, and enclosed luminosity are strongly correlated and well described by a
planar relationship in 3D space. We also find that the enclosed total mass and
stellar mass are correlated with a logarithmic slope of $0.443pm0.035$, and
the enclosed total mass and stellar-to-total mass fraction are correlated with
a logarithmic slope of $-0.563pm0.035$. The correlations described here can be
used to validate strong lensing candidates in upcoming imaging surveys — such
as Rubin/Legacy Survey of Space and Time (LSST) — in which an algorithmic
treatment of lensing systems will be needed due to the sheer volume of data
these surveys will produce.
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