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Models of the strongly lensed quasar DES J0408-5354
- Source :
- NASA Astrophysics Data System, 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, Suyu, S H, 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, T M C, Abdalla, F B, Allam, S, Benoit-Lévy, A, Bertin, E, Brooks, D, Burke, D L, Rosell, A C, Kind, M C, Carretero, J, Crocce, M, Cunha, C E, D'Andrea, C B, Costa, L N D, Desa, S, Dietrich, J P, Eifler, T F, Flaugher, B, Fosalba, P, García-Bellido, J, Gaztanaga, E, Goldstein, D A, Gruen, D, Gruendl, R A, Gschwend, J, Gutierrez, G, Honscheid, K, James, D J, Kuehn, K, Kuropatkin, N, Li, T S, Lima, M, Maia, M A G, March, M, Marshall, J L, Melchior, P, Menanteau, F, Miquel, R, Ogando, R L C, Plazas, A A, Romer, A K, Sanchez, E, Schindler, R, Schubnell, M, Sevilla-Noarbe, I, Smith, R C, Sobreira, F, Suchyta, E, Swanson, M E C, Tarle, G, Thomas, D & Walker, A R 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, Mon.Not.Roy.Astron.Soc., Mon.Not.Roy.Astron.Soc., 2017, 472 (4), pp.4038-4050. ⟨10.1093/mnras/stx2242⟩, Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 472 (4), pp.4038-4050. ⟨10.1093/mnras/stx2242⟩, Mon.Not.Roy.Astron.Soc., 2017, 472 (4), pp.4038-4050. 〈10.1093/mnras/stx2242〉, Monthly Notices of the Royal Astronomical Society, 472 (4)
- Publication Year :
- 2017
- Publisher :
- ETH Zurich, 2017.
-
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 × 10(10) M⊙. The main deflector has stellar mass log10(M⋆/M⊙) = 11.49(+0.46)(−0.32), a projected mass Mp(RE, G1) ≈ 6 × 10(11) 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.<br />Monthly Notices of the Royal Astronomical Society, 472 (4)<br />ISSN:0035-8711<br />ISSN:1365-2966<br />ISSN:1365-8711
- Subjects :
- Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Stellar mass
[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph]
astro-ph.GA
Flux
FOS: Physical sciences
techniques: image processing
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
techniques: image processig
Einstein radius
0103 physical sciences
Chromaticity
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
STFC
catalogues
strong
methods: statistical
catalogues [gravitational lensing]
QB
Physics
010308 nuclear & particles physics
Astronomy
Velocity dispersion
RCUK
gravitational lensing: strong
Astronomy and Astrophysics
Quasar
Astrophysics - Astrophysics of Galaxies
Redshift
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
Dark energy
astro-ph.CO
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 00358711 and 13652966
- Database :
- OpenAIRE
- Journal :
- NASA Astrophysics Data System, 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, Suyu, S H, 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, T M C, Abdalla, F B, Allam, S, Benoit-Lévy, A, Bertin, E, Brooks, D, Burke, D L, Rosell, A C, Kind, M C, Carretero, J, Crocce, M, Cunha, C E, D'Andrea, C B, Costa, L N D, Desa, S, Dietrich, J P, Eifler, T F, Flaugher, B, Fosalba, P, García-Bellido, J, Gaztanaga, E, Goldstein, D A, Gruen, D, Gruendl, R A, Gschwend, J, Gutierrez, G, Honscheid, K, James, D J, Kuehn, K, Kuropatkin, N, Li, T S, Lima, M, Maia, M A G, March, M, Marshall, J L, Melchior, P, Menanteau, F, Miquel, R, Ogando, R L C, Plazas, A A, Romer, A K, Sanchez, E, Schindler, R, Schubnell, M, Sevilla-Noarbe, I, Smith, R C, Sobreira, F, Suchyta, E, Swanson, M E C, Tarle, G, Thomas, D & Walker, A R 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, Mon.Not.Roy.Astron.Soc., Mon.Not.Roy.Astron.Soc., 2017, 472 (4), pp.4038-4050. ⟨10.1093/mnras/stx2242⟩, Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 472 (4), pp.4038-4050. ⟨10.1093/mnras/stx2242⟩, Mon.Not.Roy.Astron.Soc., 2017, 472 (4), pp.4038-4050. 〈10.1093/mnras/stx2242〉, Monthly Notices of the Royal Astronomical Society, 472 (4)
- Accession number :
- edsair.doi.dedup.....e6d646f1a71cbbdac05e1722517fb7b7
- Full Text :
- https://doi.org/10.3929/ethz-b-000226441