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Gaia GraL: Gaia DR2 gravitational lens systems: VI. spectroscopic confirmation and modeling of quadruply imaged lensed quasars

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...

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Main Authors: Stern, Daniel (Author) , Djorgovski, S. G. (Author) , Krone-Martins, A. (Author) , Sluse, D. (Author) , Delchambre, L. (Author) , Ducourant, C. (Author) , Teixeira, R. (Author) , Surdej, J. (Author) , Boehm, C. (Author) , Brok, J. den (Author) , Dobie, D. (Author) , Drake, A. (Author) , Galluccio, L. (Author) , Graham, M. J. (Author) , Jalan, P. (Author) , Klüter, Jonas (Author) , Campion, J.-F. Le (Author) , Mahabal, A. (Author) , Mignard, F. (Author) , Murphy, T. (Author) , Nierenberg, A. (Author) , Jr, S. Scarano (Author) , Simon, J. (Author) , Slezak, E. (Author) , Spindola-Duarte, C. (Author) , Wambsganß, Joachim (Author)
Format: Article (Journal)
Language:English
Published: 2021 October 28
In: The astrophysical journal
Year: 2021, Volume: 921, Issue: 1, Pages: 1-16
ISSN:1538-4357
DOI:10.3847/1538-4357/ac0f04
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3847/1538-4357/ac0f04
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Author Notes:D. Stern, S.G. Djorgovski, A. Krone-Martins, D. Sluse, L. Delchambre, C. Ducourant, R. Teixeira, J. Surdej, C. Boehm, J. den Brok, D. Dobie, A. Drake, L. Galluccio, M.J. Graham, P. Jalan, J. Klüter, J.-F. Le Campion, A. Mahabal, F. Mignard, T. Murphy, A. Nierenberg, S. Scarano Jr, J. Simon, E. Slezak, C. Spindola-Duarte, and J. Wambsganss
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Summary: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 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.
Item Description:Gesehen am 15.12.2021
Physical Description:Online Resource
ISSN:1538-4357
DOI:10.3847/1538-4357/ac0f04

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