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

Abstract

We report the discovery, spectroscopic confirmation and first lens models of the first two, strongly lensed quasars from a combined search in WISE and Gaia 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 R eff ≈ 3.4 arcsec, stellar mass $$\log(M_{\star}/M_{\odot}) = 11.64^{+0.20}_{-0.43}$$, and shows extended isophotal shape variation. Simple lens models yield Einstein radii $$R_{\rm E}=(1.30\pm0.04)^{\prime\prime},$$ axis ratio $$q=0.75\pm0.1$$ (compatible with that of the starlight) and considerable shear-ellipticity degeneracies. The two-image lens WGD2021-4115 (r.a.=20:21:39.45, dec.=--41:15:57.11) has $$z_{s}=1.390\pm0.001$$ and $$z_l = 0.335 \pm 0.002$$, and Einstein radius $$R_{\rm E} = (1.1\pm0.1)^{\prime\prime},$$ but higher-resolution imaging is needed to accurately separate the deflector and faint quasar image. Finally, we also show high-rank candidate doubles selected this way, some of which have been independently identified with different techniques, and discuss a DES+WISE quasar multiplet selection.

Authors:
 [1];  [2];  [2];  [2]; ORCiD logo [3];  [4];  [5];  [6];  [6];  [5];  [7];  [8];  [9];  [10];  [2];  [11];  [12];  [13];  [9];  [14] more »;  [15];  [16];  [2];  [17];  [18];  [2];  [2];  [19];  [20];  [21];  [22];  [23];  [24];  [25];  [12];  [26];  [24];  [27];  [2];  [28];  [2];  [29];  [30];  [31];  [32];  [33];  [24];  [2];  [34];  [35];  [36];  [22];  [37];  [24];  [26];  [33];  [38];  [24];  [39];  [40];  [2];  [41];  [42];  [40];  [43];  [2];  [44];  [45];  [46];  [42];  [2];  [47] « less
  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
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
Contributing Org.:
DES Collaboration
OSTI Identifier:
1413680
Alternate Identifier(s):
OSTI ID: 1468026
Report Number(s):
FERMILAB-PUB-17-558-A-AE; arXiv:1711.03971
Journal ID: ISSN 0035-8711; 1635831
Grant/Contract Number:  
AC02-07CH11359; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 479; Journal Issue: 4; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; gravitational lensing: strong; methods: statistical; techniques: image processing; surveys

Citation Formats

Agnello, A., Lin, H., Kuropatkin, N., Buckley-Geer, E., Anguita, T., Schechter, P. L., Morishita, T., Motta, V., Rojas, K., Treu, T., Amara, A., Auger, M. W., Courbin, F., Fassnacht, C. D., Frieman, J., More, A., Marshall, P. J., McMahon, R. G., Meylan, G., Suyu, S. H., Glazebrook, K., Morgan, N., Nord, B., Abbott, T. M. C., Abdalla, F. B., Annis, J., Bechtol, K., Benoit-Lévy, A., Bertin, E., Bernstein, R. A., Brooks, D., Burke, D. L., Rosell, A. Carnero, Carretero, J., Cunha, C. E., D’Andrea, C. B., da Costa, L. N., Desai, S., Drlica-Wagner, A., Eifler, T. F., Flaugher, B., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Kuehn, K., Lahav, O., Lima, M., Maia, M. A. G., March, M., Menanteau, F., Miquel, R., Ogando, R. L. C., Plazas, A. A., Sanchez, E., Scarpine, V., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Tucker, D., and Wechsler, R. DES meets Gaia: discovery of strongly lensed quasars from a multiplet search. United States: N. p., 2018. Web. doi:10.1093/mnras/sty1419.
Agnello, A., Lin, H., Kuropatkin, N., Buckley-Geer, E., Anguita, T., Schechter, P. L., Morishita, T., Motta, V., Rojas, K., Treu, T., Amara, A., Auger, M. W., Courbin, F., Fassnacht, C. D., Frieman, J., More, A., Marshall, P. J., McMahon, R. G., Meylan, G., Suyu, S. H., Glazebrook, K., Morgan, N., Nord, B., Abbott, T. M. C., Abdalla, F. B., Annis, J., Bechtol, K., Benoit-Lévy, A., Bertin, E., Bernstein, R. A., Brooks, D., Burke, D. L., Rosell, A. Carnero, Carretero, J., Cunha, C. E., D’Andrea, C. B., da Costa, L. N., Desai, S., Drlica-Wagner, A., Eifler, T. F., Flaugher, B., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Kuehn, K., Lahav, O., Lima, M., Maia, M. A. G., March, M., Menanteau, F., Miquel, R., Ogando, R. L. C., Plazas, A. A., Sanchez, E., Scarpine, V., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Tucker, D., & Wechsler, R. DES meets Gaia: discovery of strongly lensed quasars from a multiplet search. United States. doi:10.1093/mnras/sty1419.
Agnello, A., Lin, H., Kuropatkin, N., Buckley-Geer, E., Anguita, T., Schechter, P. L., Morishita, T., Motta, V., Rojas, K., Treu, T., Amara, A., Auger, M. W., Courbin, F., Fassnacht, C. D., Frieman, J., More, A., Marshall, P. J., McMahon, R. G., Meylan, G., Suyu, S. H., Glazebrook, K., Morgan, N., Nord, B., Abbott, T. M. C., Abdalla, F. B., Annis, J., Bechtol, K., Benoit-Lévy, A., Bertin, E., Bernstein, R. A., Brooks, D., Burke, D. L., Rosell, A. Carnero, Carretero, J., Cunha, C. E., D’Andrea, C. B., da Costa, L. N., Desai, S., Drlica-Wagner, A., Eifler, T. F., Flaugher, B., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Honscheid, K., James, D. J., Kuehn, K., Lahav, O., Lima, M., Maia, M. A. G., March, M., Menanteau, F., Miquel, R., Ogando, R. L. C., Plazas, A. A., Sanchez, E., Scarpine, V., Schindler, R., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Tucker, D., and Wechsler, R. Mon . "DES meets Gaia: discovery of strongly lensed quasars from a multiplet search". United States. doi:10.1093/mnras/sty1419. https://www.osti.gov/servlets/purl/1413680.
@article{osti_1413680,
title = {DES meets Gaia: discovery of strongly lensed quasars from a multiplet search},
author = {Agnello, A. and Lin, H. and Kuropatkin, N. and Buckley-Geer, E. and Anguita, T. and Schechter, P. L. and Morishita, T. and Motta, V. and Rojas, K. and Treu, T. and Amara, A. and Auger, M. W. and Courbin, F. and Fassnacht, C. D. and Frieman, J. and More, A. and Marshall, P. J. and McMahon, R. G. and Meylan, G. and Suyu, S. H. and Glazebrook, K. and Morgan, N. and Nord, B. and Abbott, T. M. C. and Abdalla, F. B. and Annis, J. and Bechtol, K. and Benoit-Lévy, A. and Bertin, E. and Bernstein, R. A. and Brooks, D. and Burke, D. L. and Rosell, A. Carnero and Carretero, J. and Cunha, C. E. and D’Andrea, C. B. and da Costa, L. N. and Desai, S. and Drlica-Wagner, A. and Eifler, T. F. and Flaugher, B. and García-Bellido, J. and Gaztanaga, E. and Gerdes, D. W. and Gruen, D. and Gruendl, R. A. and Gschwend, J. and Gutierrez, G. and Honscheid, K. and James, D. J. and Kuehn, K. and Lahav, O. and Lima, M. and Maia, M. A. G. and March, M. and Menanteau, F. and Miquel, R. and Ogando, R. L. C. and Plazas, A. A. and Sanchez, E. and Scarpine, V. and Schindler, R. and Schubnell, M. and Sevilla-Noarbe, I. and Smith, M. and Soares-Santos, M. and Sobreira, F. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Tucker, D. and Wechsler, R.},
abstractNote = {We report the discovery, spectroscopic confirmation and first lens models of the first two, strongly lensed quasars from a combined search in WISE and Gaia 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 $\log(M_{\star}/M_{\odot}) = 11.64^{+0.20}_{-0.43}$, and shows extended isophotal shape variation. Simple lens models yield Einstein radii $R_{\rm E}=(1.30\pm0.04)^{\prime\prime},$ axis ratio $q=0.75\pm0.1$ (compatible with that of the starlight) and considerable shear-ellipticity degeneracies. The two-image lens WGD2021-4115 (r.a.=20:21:39.45, dec.=--41:15:57.11) has $z_{s}=1.390\pm0.001$ and $z_l = 0.335 \pm 0.002$, and Einstein radius $R_{\rm E} = (1.1\pm0.1)^{\prime\prime},$ but higher-resolution imaging is needed to accurately separate the deflector and faint quasar image. Finally, we also show high-rank candidate doubles selected this way, some of which have been independently identified with different techniques, and discuss a DES+WISE quasar multiplet selection.},
doi = {10.1093/mnras/sty1419},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 4,
volume = 479,
place = {United States},
year = {2018},
month = {6}
}

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