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Title: H0LiCOW – IV. Lens mass model of HE 0435-1223 and blind measurement of its time-delay distance for cosmology

Strong gravitational lenses with measured time delays between the multiple images allow a direct measurement of the time-delay distance to the lens, and thus a measure of cosmological parameters, particularly the Hubble constant, H0. We present a blind lens model analysis of the quadruply imaged quasar lens HE 0435-1223 using deep Hubble Space Telescope imaging, updated time-delay measurements from the COSmological MOnitoring of GRAvItational Lenses (COSMOGRAIL), a measurement of the velocity dispersion of the lens galaxy based on Keck data, and a characterization of the mass distribution along the line of sight. HE 0435-1223 is the third lens analysed as a part of the H0 Lenses in COSMOGRAIL's Wellspring (H0LiCOW) project. We account for various sources of systematic uncertainty, including the detailed treatment of nearby perturbers, the parametrization of the galaxy light and mass profile, and the regions used for lens modelling. We constrain the effective time-delay distance to be D Δt=2612$$+208\atop{-191}$$Mpc, a precision of 7.6 per cent. From HE 0435-1223 alone, we infer a Hubble constant of H 0=73.1$$+5.7\atop{-6.0}$$kms -1Mpc -1 assuming a flat ΛCDM cosmology. Lastly, the cosmographic inference based on the three lenses analysed by H0LiCOW to date is presented in a companion paper (H0LiCOW Paper V).
 [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [5] ;  [5] ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10] ;  [11] ;  [12] ;  [5]
  1. National Astronomical Observatory of Japan, Tokyo (Japan); Academia Sinica, Taipei (Taiwan). Inst. of Astronomy and Astrophysics
  2. Max Planck Society, Garching (Germany). Max Planck Inst. for Astrophysik; Academia Sinica, Taipei (Taiwan). Inst. of Astronomy and Astrophysics; Technische Univ. Munchen, Garching (Germany). Dept. Physik
  3. Univ. of Cambridge (United Kingdom). Inst. of Astronomy
  4. Ecole Polytechnique Federale Lausanne (Switzlerland). Laboratoire d'Astrophysique
  5. Univ. of California, Davis, CA (United States). Dept. of Physics
  6. Univ. of Liege, (Belgium). Space sciences, Technologies and Astrophysics Research (STAR) Inst.
  7. Univ. of Tokyo (Japan). Kavli Inst. for the Physics and Mathematics of the Universe
  8. Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
  9. Univ. of Portsmouth (United Kingdom). Inst. of Cosmology and Gravitation
  10. Excellence Cluster Universe, Garching (Germany); Ludwig Maximilian Univ., Munich (Germany)
  11. Univ. of Groningen (The Netherlands). Kapteyn Astronomical Inst.
  12. Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
Publication Date:
Grant/Contract Number:
MOST-103-2112-M-001-003-MY3; AST-1312329; AST-1450141; 639.043.308; AC02-76SF00515
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 465; Journal Issue: 4; Journal ID: ISSN 0035-8711
Royal Astronomical Society
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE; National Aeronautic and Space Administration (NASA); Ministry of Science and Technology in Taiwan; Swiss National Science Foundation (SNSF); National Science Foundation (NSF)
Country of Publication:
United States
79 ASTRONOMY AND ASTROPHYSICS; gravitational lensing; strong cosmological parameters; distance scale
OSTI Identifier: