Galaxies inside 120 arcsec of HE 0435-1223 Virtual Observatory Resource

Authors
  1. Rusu C.E.
  2. Fassnacht C.D.
  3. Sluse D.
  4. Hilbert S.
  5. Wong K.C.
  6. Huang K.-H.,Suyu S.H.
  7. Collett T.E.
  8. Marshall P.J.
  9. Treu T.
  10. Koopmans L.V.E.
  11. Published by
    CDS
Abstract

Based on spectroscopy and multiband wide-field observations of the gravitationally lensed quasar HE 0435-1223, we determine the probability distribution function of the external convergence {kappa}_ext_ for this system. We measure the under/overdensity of the line of sight towards the lens system and compare it to the average line of sight throughout the Universe, determined by using the CFHTLenS (The Canada France Hawaii Lensing Survey) as a control field. Aiming to constrain {kappa}_ext_ as tightly as possible, we determine under/overdensities using various combinations of relevant informative weighting schemes for the galaxy counts, such as projected distance to the lens, redshift and stellar mass. We then convert the measured under/overdensities into a {kappa}_ext_ distribution, using ray-tracing through the Millennium Simulation. We explore several limiting magnitudes and apertures, and account for systematic and statistical uncertainties relevant to the quality of the observational data, which we further test through simulations. Our most robust estimate of {kappa}_ext_ has a median value {kappa}^med^_ext_=0.004 and a standard deviation {sigma}_{kappa}_=0.025. The measured {sigma}_{kappa}_ corresponds to 2.5 per cent relative uncertainty on the time delay distance, and hence the Hubble constant H_0_ inferred from this system. The median {kappa}^med^_ext_ value varies by ~0.005 with the adopted aperture radius, limiting magnitude and weighting scheme, as long as the latter incorporates galaxy number counts, the projected distance to the main lens and a prior on the external shear obtained from mass modelling. This corresponds to just ~0.5 per cent systematic impact on H_0_. The availability of a well-constrained {kappa}_ext_ makes HE 0435-1223 a valuable system for measuring cosmological parameters using strong gravitational lens time delays.

Keywords
  1. Gravitational lensing
  2. Galaxies
  3. Photometry
  4. Redshifted
  5. Optical astronomy
  6. Sloan photometry
  7. Infrared photometry
Bibliographic source Bibcode
2017MNRAS.467.4220R
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/467/4220
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/467/4220

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/467/4220
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/467/4220
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/467/4220
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/467/4220/catalog?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/467/4220/catalog?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/467/4220/catalog?

History

2019-12-16T10:18:37Z
Resource record created
2019-12-16T10:18:37Z
Created
2021-09-15T12:10:14Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr