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

A. Agnello; H. Lin; N. Kuropatkin; E. Buckley-Geer; T. Anguita; P. L. Schechter; T. Morishita; V. Motta; K. Rojas; T. Treu; A. Amara; M. W. Auger; F. Courbin; C. D. Fassnacht; J. Frieman; A. More; P. J. Marshall; R. G. McMahon; G. Meylan; S. H. Suyu; K. Glazebrook; N. Morgan; B. Nord; T. M.C. Abbott; F. B. Abdalla; J. Annis; K. Bechtol; K. Benoit-Lévy; E. Bertin; R. A. Bernstein; D. Brooks; D. L. Burke; A. Carnero Rosell; J. Carretero; C. E. Cunha; C. B. D'Andrea; L. N. da Costa; S. Desai; A. Drlica-Wagner; T. F. Eifler; B. Flaugher; J. García-Bellido; E. Gaztanaga; D. W. Gerdes; D. Gruen; R. A. Gruendl; J. Gschwend; G. Gutierrez; K. Honscheid; D. J. James; K. Kuehn; O. Lahav; M. Lima; M. A.G. Maia; M. March; F. Menanteau; R. Miquel; R. L.C. Ogando; A. A. Plazas; E. Sanchez; V. Scarpine; R. Schindler; M. Schubnell; I. Sevilla-Noarbe; M. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E.C. Swanson; G. Tarle; D. Tucker; R. Wechsler

doi:10.1093/mnras/sty1419

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

A. Agnello
, H. Lin
, N. Kuropatkin
, E. Buckley-Geer
, T. Anguita
, P. L. Schechter
, T. Morishita
, V. Motta
, K. Rojas
, T. Treu
, A. Amara
, M. W. Auger
, F. Courbin
, C. D. Fassnacht
, J. Frieman
, A. More
, P. J. Marshall
, R. G. McMahon
, G. Meylan
, S. H. Suyu

K. Glazebrook, N. Morgan, B. Nord, T. M.C. Abbott, F. B. Abdalla, J. Annis, K. Bechtol, K. Benoit-Lévy, E. Bertin, R. A. Bernstein, D. Brooks, D. L. Burke, A. Carnero Rosell, J. Carretero, C. E. Cunha, C. B. D'Andrea, L. N. da Costa, S. Desai, A. Drlica-Wagner, T. F. Eifler, B. Flaugher, J. García-Bellido, E. Gaztanaga, D. W. Gerdes, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, K. Honscheid, D. J. James, K. Kuehn, O. Lahav, M. Lima, M. A.G. Maia, M. March, F. Menanteau, R. Miquel, R. L.C. Ogando, A. A. Plazas, E. Sanchez, V. Scarpine, R. Schindler, M. Schubnell, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E.C. Swanson, G. Tarle, D. Tucker, R. Wechsler

European Southern Observatory
Fermi National Accelerator Laboratory
University Andrés Bello
MIT Kavli Institute for Astrophysics and Space Research
University of California at Los Angeles
Universidad de Valparaíso
ETH Zurich
Institute of Astronomy
EPFL
University of California, Davis
University of Tokyo
Kavli Institute for Particle Astrophysics and Cosmology
University of Cambridge
Max-Planck-Institut für Astrophysik
Swinburne University of Technology
Staples High School
National Optical Astronomy Observatory
University College London
Rhodes University
Institut d'Astrophysique de Paris
The Observatories of the Carnegie Institution for Science
Stanford University
Laboratório Interinstitucional de e-Astronomia
Observatório Nacional
Dept. d'Estructura I Constituents De La Matèria and IFAE
University of Pennsylvania School of Arts and Sciences
Indian Institute of Technology Hyderabad
California Institute of Technology
Universidad Autónoma de Madrid
Institut de Ciències de l’Espai (IEEC-CSIC)
University of Michigan, Ann Arbor
University of Illinois Urbana-Champaign
Ohio State University
University of Washington
Australian Astronomical Observatory
University of São Paulo
UFRGS
CIEMAT Energy Department
University of Southampton
University of Campinas
Oak Ridge National Laboratory

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

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 z_l = 0.230 ± 0.002, respectively, has a deflector with radius R_eff ≈ 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 R_E = (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 z_s = 1.390 ± 0.001 and z_l = 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.

Original language	English
Pages (from-to)	4345-4354
Number of pages	10
Journal	Monthly Notices of the Royal Astronomical Society
Volume	479
Issue number	4
DOIs	https://doi.org/10.1093/mnras/sty1419
State	Published - 1 Oct 2018
Externally published	Yes

Keywords

Gravitational lensing: strong
Methods: statistical
Surveys
Techniques: image processing

Access to Document

10.1093/mnras/sty1419

Cite this

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., ... Wechsler, R. (2018). DES meets Gaia: Discovery of strongly lensed quasars from a multiplet search. Monthly Notices of the Royal Astronomical Society, 479(4), 4345-4354. https://doi.org/10.1093/mnras/sty1419

@article{5f159edb7ab3463e9d07faef92cb236c,

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, 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.",

keywords = "Gravitational lensing: strong, Methods: statistical, Surveys, Techniques: image processing",

author = "A. Agnello and H. Lin and N. Kuropatkin and E. Buckley-Geer and T. Anguita and Schechter, \{P. L.\} and T. Morishita and V. Motta and K. Rojas and T. Treu and A. Amara and Auger, \{M. W.\} and F. Courbin and Fassnacht, \{C. D.\} and J. Frieman and A. More and Marshall, \{P. J.\} and McMahon, \{R. G.\} and G. Meylan and Suyu, \{S. H.\} and K. Glazebrook and N. Morgan and B. Nord and Abbott, \{T. M.C.\} and Abdalla, \{F. B.\} and J. Annis and K. Bechtol and K. Benoit-L{\'e}vy and E. Bertin and Bernstein, \{R. A.\} and D. Brooks and Burke, \{D. L.\} and \{Carnero Rosell\}, A. and J. Carretero and Cunha, \{C. E.\} and D'Andrea, \{C. B.\} and \{da Costa\}, \{L. N.\} and S. Desai and A. Drlica-Wagner and Eifler, \{T. F.\} and B. Flaugher and J. Garc{\'i}a-Bellido and E. Gaztanaga and Gerdes, \{D. W.\} and D. Gruen and Gruendl, \{R. A.\} and J. Gschwend and G. Gutierrez and K. Honscheid and James, \{D. J.\} and K. Kuehn and O. Lahav and M. Lima and Maia, \{M. A.G.\} and M. March and F. Menanteau and R. Miquel and Ogando, \{R. L.C.\} and Plazas, \{A. A.\} and E. Sanchez and V. Scarpine and R. Schindler and M. Schubnell and I. Sevilla-Noarbe and M. Smith and M. Soares-Santos and F. Sobreira and E. Suchyta and Swanson, \{M. E.C.\} and G. Tarle and D. Tucker and R. Wechsler",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.",

year = "2018",

month = oct,

day = "1",

doi = "10.1093/mnras/sty1419",

language = "English",

volume = "479",

pages = "4345--4354",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Agnello, A, Lin, H, Kuropatkin, N, Buckley-Geer, E, Anguita, T, Schechter, PL, Morishita, T, Motta, V, Rojas, K, Treu, T, Amara, A, Auger, MW, Courbin, F, Fassnacht, CD, Frieman, J, More, A, Marshall, PJ, McMahon, RG, Meylan, G, Suyu, SH, Glazebrook, K, Morgan, N, Nord, B, Abbott, TMC, Abdalla, FB, Annis, J, Bechtol, K, Benoit-Lévy, K, Bertin, E, Bernstein, RA, Brooks, D, Burke, DL, Carnero Rosell, A, Carretero, J, Cunha, CE, D'Andrea, CB, da Costa, LN, Desai, S, Drlica-Wagner, A, Eifler, TF, Flaugher, B, García-Bellido, J, Gaztanaga, E, Gerdes, DW, Gruen, D, Gruendl, RA, Gschwend, J, Gutierrez, G, Honscheid, K, James, DJ, Kuehn, K, Lahav, O, Lima, M, Maia, MAG, March, M, Menanteau, F, Miquel, R, Ogando, RLC, Plazas, AA, Sanchez, E, Scarpine, V, Schindler, R, Schubnell, M, Sevilla-Noarbe, I, Smith, M, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Tucker, D & Wechsler, R 2018, 'DES meets Gaia: Discovery of strongly lensed quasars from a multiplet search', Monthly Notices of the Royal Astronomical Society, vol. 479, no. 4, pp. 4345-4354. https://doi.org/10.1093/mnras/sty1419

TY - JOUR

T1 - DES meets Gaia

T2 - Discovery of strongly lensed quasars from a multiplet search

AU - Agnello, A.

AU - Lin, H.

AU - Kuropatkin, N.

AU - Buckley-Geer, E.

AU - Anguita, T.

AU - Schechter, P. L.

AU - Morishita, T.

AU - Motta, V.

AU - Rojas, K.

AU - Treu, T.

AU - Amara, A.

AU - Auger, M. W.

AU - Courbin, F.

AU - Fassnacht, C. D.

AU - Frieman, J.

AU - More, A.

AU - Marshall, P. J.

AU - McMahon, R. G.

AU - Meylan, G.

AU - Suyu, S. H.

AU - Glazebrook, K.

AU - Morgan, N.

AU - Nord, B.

AU - Abbott, T. M.C.

AU - Abdalla, F. B.

AU - Annis, J.

AU - Bechtol, K.

AU - Benoit-Lévy, K.

AU - Bertin, E.

AU - Bernstein, R. A.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carretero, J.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - da Costa, L. N.

AU - Desai, S.

AU - Drlica-Wagner, A.

AU - Eifler, T. F.

AU - Flaugher, B.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Gerdes, D. W.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Honscheid, K.

AU - James, D. J.

AU - Kuehn, K.

AU - Lahav, O.

AU - Lima, M.

AU - Maia, M. A.G.

AU - March, M.

AU - Menanteau, F.

AU - Miquel, R.

AU - Ogando, R. L.C.

AU - Plazas, A. A.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Schindler, R.

AU - Schubnell, M.

AU - Sevilla-Noarbe, I.

AU - Smith, M.

AU - Soares-Santos, M.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Swanson, M. E.C.

AU - Tarle, G.

AU - Tucker, D.

AU - Wechsler, R.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - 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.

AB - 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.

KW - Gravitational lensing: strong

KW - Methods: statistical

KW - Surveys

KW - Techniques: image processing

UR - https://www.scopus.com/pages/publications/85051506797

U2 - 10.1093/mnras/sty1419

DO - 10.1093/mnras/sty1419

M3 - Article

AN - SCOPUS:85051506797

SN - 0035-8711

VL - 479

SP - 4345

EP - 4354

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

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

Abstract

Keywords

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