COOL-LAMPS. VII. Quantifying Strong-lens Scaling Relations with 177 Cluster-scale Gravitational Lenses in DECaLS

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 $0.2 \lessapprox z...

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Main Authors:	Mork, Simon D, Gladders, Michael D, Khullar, Gourav, Sharon, Keren, Chicoine, Nathalie, Cloonan, Aidan P, Dahle, Håkon, Garza, Diego, Glusman, Rowen, Gozman, Katya, Horwath, Gabriela, Levine, Benjamin C, Liang, Olina, Mahronic, Daniel, Manwadkar, Viraj, Martinez, Michael N, Masegian, Alexandra, Acuña, Owen S. Matthews, Merz, Kaiya, Pan, Yue, Sanchez, Jorge A, Sierra, Isaac, Stein, Daniel J. Kavin, Sukay, Ezra, Tamargo-Arizmendi, Marcos, Tavangar, Kiyan, Tu, Ruoyang, Wagner, Grace, Zaborowski, Erik A, Zhang, Yunchong
Format:	Journal Article
Language:	English
Published:	16-01-2024
Subjects:	Physics - Astrophysics of Galaxies
Online Access:	Get full text
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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 $0.2 \lessapprox z \lessapprox 1.0$ using only two measured parameters in each lensing system: the Einstein radius, and the brightest-cluster-galaxy (BCG) redshift. We then 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 $g$, $r$, and $z$-band 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 $0.443\pm0.035$, and the enclosed total mass and stellar-to-total mass fraction are correlated with a logarithmic slope of $-0.563\pm0.035$. 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.
DOI:	10.48550/arxiv.2401.08575