A z=4.0148 galaxy shows clumpy ring morphology consistent with either a collisional ring or strong lensing by a foreground galaxy at z~1.7.
S., Burles, S., Koopmans, L
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The authors measure source redshifts between 1.675 and 3.332 for six strong lens systems using Keck NIRES and DESI spectroscopy, completing redshift data for these AI-discovered lenses.
Spatially resolved kinematics show SLACS lens galaxies have nearly isothermal total mass profiles (mean γ=2.04) with average mass-sheet parameter λ_int=1.01, consistent with no measurable bias from power-law assumptions in cosmography.
High-resolution Keck observations and dual-code lens modeling of the first lensed Type I superluminous supernova give sub-milliarcsecond position fits and masses of 4.44 and 0.96 times 10^11 solar masses for the primary and secondary lenses.
citing papers explorer
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JWST's PEARLS: A clumpy ring galaxy at $z = 4.0148$
A z=4.0148 galaxy shows clumpy ring morphology consistent with either a collisional ring or strong lensing by a foreground galaxy at z~1.7.
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DESI Strong Lens Foundry III: Keck Spectroscopy for Strong Lenses Discovered Using Residual Neural Networks
The authors measure source redshifts between 1.675 and 3.332 for six strong lens systems using Keck NIRES and DESI spectroscopy, completing redshift data for these AI-discovered lenses.
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Spatially Resolved Kinematics of SLACS Lens Galaxies. II: Breaking Degeneracies with Lensing and Dynamical Models
Spatially resolved kinematics show SLACS lens galaxies have nearly isothermal total mass profiles (mean γ=2.04) with average mass-sheet parameter λ_int=1.01, consistent with no measurable bias from power-law assumptions in cosmography.
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Supernova 2025wny: High-angular resolution Keck/NIRC2 observations and preliminary lens modeling
High-resolution Keck observations and dual-code lens modeling of the first lensed Type I superluminous supernova give sub-milliarcsecond position fits and masses of 4.44 and 0.96 times 10^11 solar masses for the primary and secondary lenses.