Article (Scientific journals)
H0LiCOW VIII. A weak-lensing measurement of the external convergence in the field of the lensed quasar HE 0435-1223
Tihhonova, O.; Courbin, F.; Harvey, D. et al.
2018In Monthly Notices of the Royal Astronomical Society, 477, p. 5657-5669
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Originally published in MNRAS @ https://academic.oup.com/mnras/article/477/4/5657/4987215


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Keywords :
gravitational lensing: weak; quasars: individual: HE 0435-1223; cosmological parameters; distance scale
Abstract :
[en] We present a weak gravitational lensing measurement of the external convergence along the line of sight to the quadruply lensed quasar HE 0435-1223. Using deep r-band images from Subaru Suprime Cam, we observe galaxies down to a 3σ limiting magnitude of ˜26 mag resulting in a source galaxy density of 14 galaxies per square arcminute after redshift-based cuts. Using an inpainting technique and multiscale entropy filtering algorithm, we find that the region in close proximity to the lens has an estimated external convergence of κ =-0.012^{+0.020}_{-0.013} and is hence marginally underdense. We also rule out the presence of any halo with a mass greater than M[SUB]vir[/SUB] = 1.6 × 10[SUP]14[/SUP]h[SUP]-1[/SUP]M[SUB]⊙[/SUB] (68 per cent confidence limit). Our results, consistent with previous studies of this lens, confirm that the intervening mass along the line of sight to HE 0435-1223 does not affect significantly the cosmological results inferred from the time-delay measurements of that specific object.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Tihhonova, O.;  Laboratoire d'Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
Courbin, F.;  Laboratoire d'Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
Harvey, D.;  Laboratoire d'Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
Hilbert, S.;  Exzellenzcluster Universe, Boltzmannstr. 2, D-85748 Garching, Germany ; Ludwig-Maximilians-Universität, Universitäts-Sternwarte, Scheinerstr. 1, D-81679 München, Germany
Rusu, C. E.;  Department of Physics, University of California, Davis, CA 95616, USA ; Subaru Telescope, 650 N Aohoku Pl, Hilo, HI 96720, USA
Fassnacht, C. D.;  Department of Physics, University of California, Davis, CA 95616, USA
Bonvin, V.;  Laboratoire d'Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
Marshall, P. J.;  Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94035, USA
Meylan, G.;  Laboratoire d'Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
Sluse, Dominique  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Suyu, S. H.;  Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany ; Institute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, Taiwan ; Physik Department, Technische Universität München, James-Franck-Straße 1, D-85748 Garching, Germany
Treu, T.;  Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
Wong, K. C.;  National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan)
More authors (3 more) Less
Language :
English
Title :
H0LiCOW VIII. A weak-lensing measurement of the external convergence in the field of the lensed quasar HE 0435-1223
Publication date :
01 July 2018
Journal title :
Monthly Notices of the Royal Astronomical Society
ISSN :
0035-8711
eISSN :
1365-2966
Publisher :
Oxford University Press
Volume :
477
Pages :
5657-5669
Peer reviewed :
Peer Reviewed verified by ORBi
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