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

Stern, D.; Djorgovski, S. G.; Krone-Martins, A.; Sluse, Dominique; Delchambre, Ludovic; Ducourant, C.; Teixeira, R.; Surdej, Jean; Boehm, C.; den Brok, J.; Dobie, D.; Drake, A.; Galluccio, L.; Graham, M. J.; Jalan, P.; Klark, J.; LeCampion, J. F.; Mahabal, A.; Mignard, F.; Murphy, T.; Nierenberg, A.; Scarano, S.; Simon, J.; Slezak, E.; Spindola-Duarte, C.; Wambsganss, J.

doi:10.3847/1538-4357/ac0f04

Article (Scientific journals)

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

Stern, D.; Djorgovski, S. G.; Krone-Martins, A. et al.

2021 • In Astrophysical Journal, 921, p. 42

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https://hdl.handle.net/2268/260973

DOI
10.3847/1538-4357/ac0f04

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arXiv:2012.10051

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Keywords :

Astrophysics; Astrophysics of Galaxies; Gravitational lensing

Abstract :

[en] 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.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Stern, D.

Djorgovski, S. G.

Krone-Martins, A.

Sluse, Dominique ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)

Delchambre, Ludovic ; Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)

Ducourant, C.

Teixeira, R.

Surdej, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)

Boehm, C.

den Brok, J.

More authors (16 more)

Language :

English

Title :

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

Publication date :

November 2021

Journal title :

Astrophysical Journal

ISSN :

0004-637X

eISSN :

1538-4357

Publisher :

University of Chicago Press, United States - Illinois

Volume :

921

Pages :

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://ui.adsabs.harvard.edu/abs/2020arXiv201210051S

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