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Title: DES meets Gaia: discovery of strongly lensed quasars from a multiplet search

Journal Article · · Monthly Notices of the Royal Astronomical Society
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  1. European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany
  2. Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
  3. Departamento de Ciencias Fisicas, Universidad Andres Bello Fernandez Concha 700, Las Condes, Santiago, Chile
  4. MIT Kavli Institute for Astrophysics and Space Research, 37-664G, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
  5. Department of Physics and Astronomy, PAB, 430 Portola Plaza, Box 951547, Los Angeles, CA 90095, USA
  6. Instituto de Fsica y Astronoma, Universidad de Valparaso, Avda. Gran Bretaña 1111, Playa Ancha, Valparaso 2360102, Chile
  7. Institute for Astronomy, Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 27, CH-8093, Zurich, Switzerland
  8. Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK
  9. Laboratoire d’Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
  10. Department of Physics, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA
  11. Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
  12. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USA
  13. Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK; Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
  14. Max-Planck-Institut fr Astrophysik, Karl-Schwarzschild-Str. 1, D-85741 Garching, Germany
  15. Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia
  16. Staples High School, Westport, C 06880, USA
  17. Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile
  18. Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK; Department of Physics and Electronics, Rhodes University, PO Box 94, Grahamstown, 6140, South Africa
  19. Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK; CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014, Paris, France; Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, F-75014, Paris, France
  20. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014, Paris, France; Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, F-75014, Paris, France
  21. Observatories of the Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena, CA 91101, USA
  22. Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK
  23. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USA; Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA
  24. Laboratório Interinstitucional de e-Astronomia (LIneA), Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil; Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil
  25. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), Spain
  26. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
  27. Department of Physics, IIT Hyderabad, Kandi, Telangana 502285, India
  28. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA; Department of Physics, California Institute of Technology, Pasadena, CA 91125, USA
  29. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
  30. Institut de Ciències de l’Espai, IEEC-CSIC, Campus UAB, Carrer de Can Magrans, s/n, E-08193 Bellaterra, Barcelona, Spain
  31. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA
  32. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USA; SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
  33. Department of Astronomy, University of Illinois, 1002 W. Green Street, Urbana, IL 61801, USA; National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
  34. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA; Department of Physics, The Ohio State University, Columbus, OH 43210, USA
  35. Astronomy Department, University of Washington, Box 351580, Seattle, WA 98195, USA
  36. Australian Astronomical Observatory, North Ryde, NSW 2113, Australia
  37. Laboratório Interinstitucional de e-Astronomia (LIneA), Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil; Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil; Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, CEP 05314-970, São Paulo, SP, Brazil
  38. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona), Spain; Instituto de Física, UFRGS, Caixa Postal 15051, Porto Alegre, RS 91501-970, Brazil
  39. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
  40. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), F-28040 Madrid, Spain
  41. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
  42. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
  43. School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK
  44. Laboratório Interinstitucional de e-Astronomia (LIneA), Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil; Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-859, Campinas, SP, Brazil
  45. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
  46. National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
  47. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA
+ Show Author Affiliations

We report the discovery, spectroscopic confirmation, and first lens models of the first, strongly lensed quasars from a combined search in WISE and Gaia-DR1 over the DES footprint. Their Einstein radii span a range between ≈2.0 arcsec and ≈0.4 arcsec. Two of these (WGD2038-4008, RA = 20:38:02.65, Dec. = -40:08:14.64; WGD2021-4115, RA = 20:21:39.45, Dec. = -41:15:57.11) also have confirmed deflector redshifts. The four-image lens WGD2038-4008, with source and deflector redshifts s = 0.777 ± 0.001 and zl = 0.230 ± 0.002, respectively, has a deflector with radius Reff ≈ 3.4 arcsec, stellar mass log(M*/M⊙) = 11.64 + 0.20 -0.43, and extended isophotal shape variation. Simple lens models yield Einstein radii RE = (1.30 ± 0.04) arcsec, axis ratio q = 0.75 ± 0.1 (compatible with that of the starlight) and considerable shear-ellipticity degeneracies. The two-image lens WGD2021-4115 has zs = 1.390 ± 0.001 and zl = 0.335 ± 0.002, and Einstein radius RE = (1.1 ± 0.1) arcsec, but higher-resolution imaging is needed to accurately separate the deflector and faint quasar image. Analogous lens model degeneracies hold for the other six lenses (J0146-1133, J0150-4041, J0235-2433, J0245-0556, J0259-2338, and J0508-2748) shown in this paper.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Contributing Organization:
DES Collaboration
Grant/Contract Number:
AC02-07CH11359; AC05-00OR22725
OSTI ID:
1413680
Alternate ID(s):
OSTI ID: 1468026
Report Number(s):
FERMILAB-PUB-17-558-A-AE; arXiv:1711.03971; 1635831
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 479, Issue 4; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (19)

Spectroscopic follow-up of the quadruply lensed quasar WGD2038-4008/GRAL2038-4008 journal January 2019
Gaia GraL: Gaia DR2 Gravitational Lens Systems: III. A systematic blind search for new lensed systems journal February 2019
KiDS-SQuaD: II. Machine learning selection of bright extragalactic objects to search for new gravitationally lensed quasars journal November 2019
VEXAS: VISTA EXtension to Auxiliary Surveys: Data Release 1. The southern Galactic hemisphere journal October 2019
KiDS-SQuaD: The KiDS Strongly lensed Quasar Detection project journal July 2018
Constraining the microlensing effect on time delays with a new time-delay prediction model in H0 measurements journal September 2018
High-resolution spatial analysis of a z ∼ 2 lensed galaxy using adaptive coadded source-plane reconstruction journal August 2018
Gravitationally lensed quasars in Gaia – III. 22 new lensed quasars from Gaia data release 2 journal December 2018
Is every strong lens model unhappy in its own way? Uniform modelling of a sample of 13 quadruply+ imaged quasars journal December 2018
Quasar lenses in the south: searches over the DES public footprint journal August 2019
A SHARP view of H0LiCOW: H0 from three time-delay gravitational lens systems with adaptive optics imaging journal September 2019
Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with eight quadruple-image strong gravitational lenses journal December 2019
Double dark matter vision: twice the number of compact-source lenses with narrow-line lensing and the WFC3 grism journal December 2019
Even Simpler Modeling of Quadruply Lensed Quasars (and Random Quartets) Using Witt's Hyperbola journal April 2019
Constraining the microlensing effect on time delays with new time-delay prediction model in $H_{0}$ measurements text January 2018
Quasar Lenses in the South: searches over the DES public footprint text January 2018
Is every strong lens model unhappy in its own way? Uniform modelling of a sample of 13 quadruply+ imaged quasars text January 2018
Even simpler modeling of quadruply lensed quasars (and random quartets) using Witt's hyperbola text January 2019
A SHARP view of H0LiCOW: $H_{0}$ from three time-delay gravitational lens systems with adaptive optics imaging text January 2019

Figures / Tables (9)

Table 1(p. 3)table Table 1
Table 2(p. 4)table Table 2
Figure 1(p. 5)figure Figure 1
Figure 2(p. 5)figure Figure 2
Figure 3(p. 6)figure Figure 3
Figure 4(p. 7)figure Figure 4
Figure 5(p. 7)figure Figure 5
Figure 6(p. 8)figure Figure 6
Table 3(p. 8)table Table 3

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
gravitational lensing: strong
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techniques: image processing
surveys