Gaia GraL: Gaia DR2 Gravitational Lens Systems. VI. Spectroscopic Confirmation and Modeling of Quadruply-Imaged Lensed Quasars

Abstract

Combining the exquisite angular resolution of Gaia with optical light curves and WISE photometry, the Gaia Gravitational Lenses group (GraL) uses machine learning techniques to identify candidate strongly lensed quasars, and has confirmed over two dozen new strongly lensed quasars from the Gaia Data Release 2. This paper reports on the 12 quadruply-imaged quasars identified by this effort to date, which is approximately a 20% increase in the total number of confirmed quadruply-imaged quasars. We discuss the candidate selection, spectroscopic follow-up, and lens modeling. We also report our spectroscopic failures as an aid for future investigations.

arXiv comment18 pages, 8 figures; submitted to ApJ

References in corpus (41)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• First Results from the Catalina Real-time Transient Survey
• The Zwicky Transient Facility: Science Objectives
• Dwarf Galaxies with Optical Signatures of Active Massive Black Holes
• Evidence for substructure in lens galaxies?
• A SHARP view of H0LiCOW: $H_0$ from three time-delay gravitational lens systems with adaptive optics imaging
• STRIDES: a 3.9 per cent measurement of the Hubble constant from the strong lens system DES J0408-5354
• Gaia Early Data Release 3: Summary of the contents and survey properties
• Sizes and Temperature Profiles of Quasar Accretion Disks from Chromatic Microlensing
• A Gravitationally Lensed Quasar with Quadruple Images Separated by 14.62 Arcseconds
• Quasars Probing Quasars I: Optically Thick Absorbers Near Luminous Quasars
• A precise extragalactic test of General Relativity
• Probing dark matter structure down to $10^7$ solar masses: flux ratio statistics in gravitational lenses with line of sight halos
• Is every strong lens model unhappy in its own way? Uniform modelling of a sample of 13 quadruply+ imaged quasars
• Gravitationally Lensed Quasars in Gaia: II. Discovery of 24 Lensed Quasars
• Gravitationally lensed quasars in Gaia: III. 22 new lensed quasars from Gaia Data Release 2
• The detection of [Ne v] emission in five blue compact dwarf galaxies
• Gravitational Lensing Size Scales for Quasars
• VDES J2325-5229 a z=2.7 gravitationally lensed quasar discovered using morphology independent supervised machine learning
• The Dark-Matter Fraction in the Elliptical Galaxy Lensing the Quasar PG1115+080
• Preliminary Target Selection for the DESI Bright Galaxy Survey (BGS)
• DES meets Gaia: discovery of strongly lensed quasars from a multiplet search
• WISE Discovery of Low Metallicity Blue Compact Dwarf Galaxies
• Double dark matter vision: twice the number of compact-source lenses with narrow-line lensing and the WFC3 grism
• The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2017/2018 follow-up campaign: Discovery of 10 lensed quasars and 10 quasar pairs
• Gaia GraL: Gaia DR2 Gravitational Lens Systems. III. A systematic blind search for new lensed systems
• Zooming into the broad line region of the gravitationally lensed quasar Q2237+0305 = the Einstein Cross: III. Determination of the size and structure of the CIV and CIII] emitting regions using microlensing
• The Structure of HE 1104-1805 from Infrared to X-Ray
• The Discovery of a Five-Image Lensed Quasar at z = 3.34 using PanSTARRS1 and Gaia
• Using Quadruple Lenses to probe the Structure of the Lensing Galaxy
• Constraining the geometry and kinematics of the quasar broad emission line region using gravitational microlensing. I. Models and simulations
• Broad Iron Emission from Gravitationally Lensed Quasars Observed by Chandra
• Lensed quasar search via time variability with the HSC transient survey
• Gaia DR2 Gravitational Lens Systems I: New lensed quasar candidates around known quasars
• Gaia GraL: Gaia DR2 Gravitational Lens Systems. V. Doubly-imaged QSOs discovered from entropy and wavelets
• Gaia GraL II - Gaia DR2 Gravitational Lens Systems: The Known Multiply Imaged Quasars
• The quasar-galaxy cross SDSS J1320+1644: A probable large-separation lensed quasar
• Gaia GraL: Gaia DR2 Gravitational Lens Systems. IV. Keck/LRIS spectroscopic confirmation of GRAL113100-441959 and model prediction of time-delays

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• Gravitationally lensed quasars in Gaia -- IV. 150 new lenses, quasar pairs, and projected quasars
• STRIDES: Automated uniform models for 30 quadruply imaged quasars
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• Unveiling the Universe with Emerging Cosmological Probes
• Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars
• DESI-253.2534+26.8843: A New Einstein Cross Spectroscopically Confirmed with VLT/MUSE and Modeled with GIGA-Lens
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• Search for Quasar Pairs with $Gaia$ Astrometric Data. I. Method and Candidates
• HerS-3: An Exceptional Einstein Cross Reveals a Massive Dark Matter Halo
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• New Dynamical Measurements from a Lensed Quasar Sample: Joint Analysis Constrains the Mass Profile Evolution of Lens Galaxies
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