Models of the strongly lensed quasar DES J0408-5354

Adriano Agnello; Huan Lin; L. Buckley-Geer; T. Treu; V. Bonvin; F. Courbin; C. Lemon; T. Morishita; A. Amara; M. W. Auger; S. Birrer; J. Chan; T. Collett; A. More; C. D. Fassnacht; J. Frieman; P. J. Marshall; R. G. McMahon; G. Meylan; S. H. Suyu; F. Castander; D. Finley; A. Howell; C. Kochanek; M. Makler; P. Martini; N. Morgan; B. Nord; F. Ostrovski; P. Schechter; D. Tucker; R. Wechsler; T. M. C. Abbott; F. B. Abdalla; S. Allam; A. Benoit-Lévy; E. Bertin; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; M. Crocce; C. E. Cunha; C. B. D'Andrea; L. N. da Costa; S. Desa; J. P. Dietrich; T. F. Eifler; B. Flaugher; P. Fosalba; J. García-Bellido; E. Gaztanaga; D. A. Goldstein; D. Gruen; R. A. Gruendl; J. Gschwend; G. Gutierrez; K. Honscheid; D. J. James; K. Kuehn; N. Kuropatkin; T. S. Li; M. Lima; M. A. G. Maia; M. March; J. L. Marshall; P. Melchior; F. Menanteau; R. Miquel; R. L. C. Ogando; A. A. Plazas; A. K. Romer; E. Sanchez; R. Schindler; M. Schubnell; I. Sevilla-Noarbe; R. C. Smith; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; D. Thomas; A. R. Walker

doi:10.1093/mnras/stx2242

Models of the strongly lensed quasar DES J0408-5354

Adriano Agnello, Huan Lin, L. Buckley-Geer, T. Treu, V. Bonvin, F. Courbin, C. Lemon, T. Morishita, A. Amara, M. W. Auger, S. Birrer, J. Chan, T. Collett, A. More, C. D. Fassnacht, J. Frieman, P. J. Marshall, R. G. McMahon, G. Meylan, S. H. SuyuF. Castander, D. Finley, A. Howell, C. Kochanek, M. Makler, P. Martini, N. Morgan, B. Nord, F. Ostrovski, P. Schechter, D. Tucker, R. Wechsler, T. M. C. Abbott, F. B. Abdalla, S. Allam, A. Benoit-Lévy, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Crocce, C. E. Cunha, C. B. D'Andrea, L. N. da Costa, S. Desa, J. P. Dietrich, T. F. Eifler, B. Flaugher, P. Fosalba, J. García-Bellido, E. Gaztanaga, D. A. Goldstein, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, T. S. Li, M. Lima, M. A. G. Maia, M. March, J. L. Marshall, P. Melchior, F. Menanteau, R. Miquel, R. L. C. Ogando, A. A. Plazas, A. K. Romer, E. Sanchez, R. Schindler, M. Schubnell, I. Sevilla-Noarbe, R. C. Smith, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, D. Thomas, A. R. Walker

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Abstract

We present detailed modelling of the recently discovered, quadruply lensed quasar J0408−5354, with the aim of interpreting its remarkable configuration: besides three quasar images (A,B,D) around the main deflector (G1), a fourth image (C) is significantly reddened and dimmed by a perturber (G2) which is not detected in the Dark Energy Survey imaging data. From lens models incorporating (dust-corrected) flux ratios, we find a perturber Einstein radius 0.04 arcsec ≲ R_E, _G2 ≲ 0.2 arcsec and enclosed mass Mp(RE, G2) ≲ 1.0 × 10¹⁰ M_⊙. The main deflector has stellar mass log₁₀(M_⋆/M_⊙)=11.49^∧{+0.46}_∨{−0.32}, a projected mass Mp(RE, G1) ≈ 6 × 10¹¹ M_⊙ within its Einstein radius R_E, _G1 = (1.85 ± 0.15) arcsec and predicted velocity dispersion 267–280 km s⁻¹. Follow-up images from a companion monitoring campaign show additional components, including a candidate second source at a redshift between the quasar and G1. Models with free perturbers, and dust-corrected and delay-corrected flux ratios, are also explored. The predicted time-delays (ΔtAB = (135.0 ± 12.6) d, Δt_BD = (21.0 ± 3.5) d) roughly agree with those measured, but better imaging is required for proper modelling and comparison. We also discuss some lessons learnt from J0408−5354 on lensed quasar finding strategies, due to its chromaticity and morphology.

Original language	English
Pages (from-to)	4038–4050
Journal	Monthly Notices of the Royal Astronomical Society
Volume	472
Issue number	4
Early online date	7 Sept 2017
DOIs	https://doi.org/10.1093/mnras/stx2242
Publication status	Published - Dec 2017

Keywords

astro-ph.GA
astro-ph.CO
RCUK
STFC

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10.1093/mnras/stx2242

stx2242
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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https://academic.oup.com/mnras/article/472/4/4038/4107762/Models-of-the-strongly-lensed-quasar-DES-J04085354

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Agnello, A., Lin, H., Buckley-Geer, L., Treu, T., Bonvin, V., Courbin, F., Lemon, C., Morishita, T., Amara, A., Auger, M. W., Birrer, S., Chan, J., Collett, T., More, A., Fassnacht, C. D., Frieman, J., Marshall, P. J., McMahon, R. G., Meylan, G., ... Walker, A. R. (2017). Models of the strongly lensed quasar DES J0408-5354. Monthly Notices of the Royal Astronomical Society, 472(4), 4038–4050. https://doi.org/10.1093/mnras/stx2242

@article{40071c1904e94852ad7735c4c785e703,

title = "Models of the strongly lensed quasar DES J0408-5354",

abstract = "We present detailed modelling of the recently discovered, quadruply lensed quasar J0408−5354, with the aim of interpreting its remarkable configuration: besides three quasar images (A,B,D) around the main deflector (G1), a fourth image (C) is significantly reddened and dimmed by a perturber (G2) which is not detected in the Dark Energy Survey imaging data. From lens models incorporating (dust-corrected) flux ratios, we find a perturber Einstein radius 0.04 arcsec ≲ RE, G2 ≲ 0.2 arcsec and enclosed mass Mp(RE, G2) ≲ 1.0 × 1010 M⊙. The main deflector has stellar mass log10(M⋆/M⊙)=11.49∧{+0.46}∨{−0.32}, a projected mass Mp(RE, G1) ≈ 6 × 1011 M⊙ within its Einstein radius RE, G1 = (1.85 ± 0.15) arcsec and predicted velocity dispersion 267–280 km s−1. Follow-up images from a companion monitoring campaign show additional components, including a candidate second source at a redshift between the quasar and G1. Models with free perturbers, and dust-corrected and delay-corrected flux ratios, are also explored. The predicted time-delays (ΔtAB = (135.0 ± 12.6) d, ΔtBD = (21.0 ± 3.5) d) roughly agree with those measured, but better imaging is required for proper modelling and comparison. We also discuss some lessons learnt from J0408−5354 on lensed quasar finding strategies, due to its chromaticity and morphology.",

keywords = "astro-ph.GA, astro-ph.CO, RCUK, STFC",

author = "Adriano Agnello and Huan Lin and L. Buckley-Geer and T. Treu and V. Bonvin and F. Courbin and C. Lemon and T. Morishita and A. Amara and Auger, {M. W.} and S. Birrer and J. Chan and T. Collett and A. More and Fassnacht, {C. D.} and J. Frieman and Marshall, {P. J.} and McMahon, {R. G.} and G. Meylan and Suyu, {S. H.} and F. Castander and D. Finley and A. Howell and C. Kochanek and M. Makler and P. Martini and N. Morgan and B. Nord and F. Ostrovski and P. Schechter and D. Tucker and R. Wechsler and Abbott, {T. M. C.} and Abdalla, {F. B.} and S. Allam and A. Benoit-L{\'e}vy and E. Bertin and D. Brooks and Burke, {D. L.} and Rosell, {A. Carnero} and Kind, {M. Carrasco} and J. Carretero and M. Crocce and Cunha, {C. E.} and D'Andrea, {C. B.} and Costa, {L. N. da} and S. Desa and Dietrich, {J. P.} and Eifler, {T. F.} and B. Flaugher and P. Fosalba and J. Garc{\'i}a-Bellido and E. Gaztanaga and Goldstein, {D. A.} and D. Gruen and Gruendl, {R. A.} and J. Gschwend and G. Gutierrez and K. Honscheid and James, {D. J.} and K. Kuehn and N. Kuropatkin and Li, {T. S.} and M. Lima and Maia, {M. A. G.} and M. March and Marshall, {J. L.} and P. Melchior and F. Menanteau and R. Miquel and Ogando, {R. L. C.} and Plazas, {A. A.} and Romer, {A. K.} and E. Sanchez and R. Schindler and M. Schubnell and I. Sevilla-Noarbe and Smith, {R. C.} and F. Sobreira and E. Suchyta and Swanson, {M. E. C.} and G. Tarle and D. Thomas and Walker, {A. R.}",

note = "12 pages, 8 figures, MNRAS subm. 30/01/2017. Based on the discovery results of H~Lin et al. (2017), ApJL subm. This paper has been approved for submission by DES, via Collaboration-Wide Review",

year = "2017",

month = dec,

doi = "10.1093/mnras/stx2242",

language = "English",

volume = "472",

pages = "4038–4050",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Agnello, A, Lin, H, Buckley-Geer, L, Treu, T, Bonvin, V, Courbin, F, Lemon, C, Morishita, T, Amara, A, Auger, MW, Birrer, S, Chan, J, Collett, T, More, A, Fassnacht, CD, Frieman, J, Marshall, PJ, McMahon, RG, Meylan, G, Suyu, SH, Castander, F, Finley, D, Howell, A, Kochanek, C, Makler, M, Martini, P, Morgan, N, Nord, B, Ostrovski, F, Schechter, P, Tucker, D, Wechsler, R, Abbott, TMC, Abdalla, FB, Allam, S, Benoit-Lévy, A, Bertin, E, Brooks, D, Burke, DL, Rosell, AC, Kind, MC, Carretero, J, Crocce, M, Cunha, CE, D'Andrea, CB, Costa, LND, Desa, S, Dietrich, JP, Eifler, TF, Flaugher, B, Fosalba, P, García-Bellido, J, Gaztanaga, E, Goldstein, DA, Gruen, D, Gruendl, RA, Gschwend, J, Gutierrez, G, Honscheid, K, James, DJ, Kuehn, K, Kuropatkin, N, Li, TS, Lima, M, Maia, MAG, March, M, Marshall, JL, Melchior, P, Menanteau, F, Miquel, R, Ogando, RLC, Plazas, AA, Romer, AK, Sanchez, E, Schindler, R, Schubnell, M, Sevilla-Noarbe, I, Smith, RC, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D & Walker, AR 2017, 'Models of the strongly lensed quasar DES J0408-5354', Monthly Notices of the Royal Astronomical Society, vol. 472, no. 4, pp. 4038–4050. https://doi.org/10.1093/mnras/stx2242

TY - JOUR

T1 - Models of the strongly lensed quasar DES J0408-5354

AU - Agnello, Adriano

AU - Lin, Huan

AU - Buckley-Geer, L.

AU - Treu, T.

AU - Bonvin, V.

AU - Courbin, F.

AU - Lemon, C.

AU - Morishita, T.

AU - Amara, A.

AU - Auger, M. W.

AU - Birrer, S.

AU - Chan, J.

AU - Collett, T.

AU - More, A.

AU - Fassnacht, C. D.

AU - Frieman, J.

AU - Marshall, P. J.

AU - McMahon, R. G.

AU - Meylan, G.

AU - Suyu, S. H.

AU - Castander, F.

AU - Finley, D.

AU - Howell, A.

AU - Kochanek, C.

AU - Makler, M.

AU - Martini, P.

AU - Morgan, N.

AU - Nord, B.

AU - Ostrovski, F.

AU - Schechter, P.

AU - Tucker, D.

AU - Wechsler, R.

AU - Abbott, T. M. C.

AU - Abdalla, F. B.

AU - Allam, S.

AU - Benoit-Lévy, A.

AU - Bertin, E.

AU - Brooks, D.

AU - Burke, D. L.

AU - Rosell, A. Carnero

AU - Kind, M. Carrasco

AU - Carretero, J.

AU - Crocce, M.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - Costa, L. N. da

AU - Desa, S.

AU - Dietrich, J. P.

AU - Eifler, T. F.

AU - Flaugher, B.

AU - Fosalba, P.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Goldstein, D. A.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Honscheid, K.

AU - James, D. J.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Li, T. S.

AU - Lima, M.

AU - Maia, M. A. G.

AU - March, M.

AU - Marshall, J. L.

AU - Melchior, P.

AU - Menanteau, F.

AU - Miquel, R.

AU - Ogando, R. L. C.

AU - Plazas, A. A.

AU - Romer, A. K.

AU - Sanchez, E.

AU - Schindler, R.

AU - Schubnell, M.

AU - Sevilla-Noarbe, I.

AU - Smith, R. C.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Swanson, M. E. C.

AU - Tarle, G.

AU - Thomas, D.

AU - Walker, A. R.

N1 - 12 pages, 8 figures, MNRAS subm. 30/01/2017. Based on the discovery results of H~Lin et al. (2017), ApJL subm. This paper has been approved for submission by DES, via Collaboration-Wide Review

PY - 2017/12

Y1 - 2017/12

N2 - We present detailed modelling of the recently discovered, quadruply lensed quasar J0408−5354, with the aim of interpreting its remarkable configuration: besides three quasar images (A,B,D) around the main deflector (G1), a fourth image (C) is significantly reddened and dimmed by a perturber (G2) which is not detected in the Dark Energy Survey imaging data. From lens models incorporating (dust-corrected) flux ratios, we find a perturber Einstein radius 0.04 arcsec ≲ RE, G2 ≲ 0.2 arcsec and enclosed mass Mp(RE, G2) ≲ 1.0 × 1010 M⊙. The main deflector has stellar mass log10(M⋆/M⊙)=11.49∧{+0.46}∨{−0.32}, a projected mass Mp(RE, G1) ≈ 6 × 1011 M⊙ within its Einstein radius RE, G1 = (1.85 ± 0.15) arcsec and predicted velocity dispersion 267–280 km s−1. Follow-up images from a companion monitoring campaign show additional components, including a candidate second source at a redshift between the quasar and G1. Models with free perturbers, and dust-corrected and delay-corrected flux ratios, are also explored. The predicted time-delays (ΔtAB = (135.0 ± 12.6) d, ΔtBD = (21.0 ± 3.5) d) roughly agree with those measured, but better imaging is required for proper modelling and comparison. We also discuss some lessons learnt from J0408−5354 on lensed quasar finding strategies, due to its chromaticity and morphology.

AB - We present detailed modelling of the recently discovered, quadruply lensed quasar J0408−5354, with the aim of interpreting its remarkable configuration: besides three quasar images (A,B,D) around the main deflector (G1), a fourth image (C) is significantly reddened and dimmed by a perturber (G2) which is not detected in the Dark Energy Survey imaging data. From lens models incorporating (dust-corrected) flux ratios, we find a perturber Einstein radius 0.04 arcsec ≲ RE, G2 ≲ 0.2 arcsec and enclosed mass Mp(RE, G2) ≲ 1.0 × 1010 M⊙. The main deflector has stellar mass log10(M⋆/M⊙)=11.49∧{+0.46}∨{−0.32}, a projected mass Mp(RE, G1) ≈ 6 × 1011 M⊙ within its Einstein radius RE, G1 = (1.85 ± 0.15) arcsec and predicted velocity dispersion 267–280 km s−1. Follow-up images from a companion monitoring campaign show additional components, including a candidate second source at a redshift between the quasar and G1. Models with free perturbers, and dust-corrected and delay-corrected flux ratios, are also explored. The predicted time-delays (ΔtAB = (135.0 ± 12.6) d, ΔtBD = (21.0 ± 3.5) d) roughly agree with those measured, but better imaging is required for proper modelling and comparison. We also discuss some lessons learnt from J0408−5354 on lensed quasar finding strategies, due to its chromaticity and morphology.

KW - astro-ph.GA

KW - astro-ph.CO

KW - RCUK

KW - STFC

U2 - 10.1093/mnras/stx2242

DO - 10.1093/mnras/stx2242

M3 - Article

SN - 0035-8711

VL - 472

SP - 4038

EP - 4050

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Models of the strongly lensed quasar DES J0408-5354

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