The Carousel Lens: A Well-Modeled Strong Lens with Multiple Lensed Sources

Abstract

Over the past few years alone, the lensing community has discovered thousands of strong lens candidates, and spectroscopically confirmed hundreds of them. In this time of abundance, it becomes pragmatic to focus our time and resources on the few extraordinary systems, in order to most efficiently study the universe. In this paper, we present such a system: DESI-090.9854-35.9683, a cluster-scale lens at $z_{\mathrm{l}}=0.49$, with seven observed lensed sources around the core, and additional lensed sources further out in the cluster. From the number and the textbook configuration of the lensed images, a tight constraint on the mass potential of the lens is possible. This would allow for detailed analysis on the dark and luminous matter content within galaxy clusters, as well as a probe into dark energy and high-redshift galaxies. We present our spatially resolved kinematic measurements of this system from the Very Large Telescope Multi Unit Spectroscopic Explorer, which confirm five of these source galaxies (in ascending order, at $z_{\mathrm{s}}=0.962,0.962,1.166,1.432,$ and $1.432$). With previous Hubble Space Telescope imaging in the F140W and F200LP bands, we also present a simple two power-law profile flux-based lens model that, for a cluster lens, well models the five lensed arc families with redshifts. We determine the mass to be $M(<{\theta }_{\mathrm{E}})=4.78\times 10^{13}{M}_{\odot }$ for the primary mass potential. From the model, we extrapolate the redshift of one of the two source galaxies not yet spectroscopically confirmed to be at $z_{\mathrm{s}}=4.52_{-0.71}^{+1.03}$.

14 pages, 6 figures

References in corpus (7)

• Array Programming with NumPy
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• The MUSE second-generation VLT instrument
• The Data Processing Pipeline for the MUSE Instrument
• lenstronomy II: A gravitational lensing software ecosystem
• Early Results from GLASS-JWST. I: Confirmation of Lensed $z⩾7$ Lyman-Break Galaxies Behind the Abell 2744 Cluster With NIRISS
• ComPRASS: a Combined Planck-RASS catalogue of X-ray-SZ clusters

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