H0LiCOW VIII. A weak-lensing measurement of the external convergence in the field of the lensed quasar HE 0435–1223
Journal Article
·
· Monthly Notices of the Royal Astronomical Society
- Ecole Polytechnique Federale Lausanne (Switzlerland). Lab. d'Astrophysique
- Exzellenzcluster Universe, Garching (Germany); Ludwig-Maximilians-Univ., Munchen (Germany)
- Univ. of California, Davis, CA (United States). Dept. of Physics; Subaru Telescope, Hilo, HI (United States)
- Univ. of California, Davis, CA (United States). Dept. of Physics
- Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
- STAR Inst., Liege (Belgium)
- Max Planck Society, Garching (Germany). Max Planck Inst. for Astrophysik; Academia Sinica, Taipei (Taiwan). Inst.of Astronomy and Astrophysics; Technische Univ. at Munchen, Garching (Germany)
- Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
- National Astronomical Observatory of Japan, Tokyo (Japan)
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$$+0.020\atop{-0.013}$$ and is hence marginally under-dense. We also rule out the presence of any halo with a mass greater than Mvir = 1.6 × 1014h-1M⊙ (68 percent 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
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE; National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1461883
- Journal Information:
- Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 4 Vol. 477; ISSN 0035-8711
- Publisher:
- Royal Astronomical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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