Galaxy-scale strong gravitational lensing sample Virtual Observatory Resource

Authors
  1. Chen Y.
  2. Li R.
  3. Shu Y.
  4. Cao X.
  5. Published by
    CDS
Abstract

By comparing the dynamical and lensing masses of early-type lens galaxies, one can constrain both the cosmological parameters and the density profiles of galaxies. We explore the constraining power on cosmological parameters and the effect of the lens mass model in this method with 161 galaxy-scale strong lensing systems, which is currently the largest sample with both high-resolution imaging and stellar dynamical data. We assume a power-law mass model for the lenses, and consider three different parametrizations for {gamma} (i.e. the slope of the total mass density profile) to include the effect of the dependence of {gamma} on redshift and surface mass density. When treating {delta} (i.e. the slope of the luminosity density profile) as a universal parameter for all lens galaxies, we find the limits on the cosmological parameter {Omega}_m_ are quite weak and biased, and also heavily dependent on the lens mass model in the scenarios of parametrizing {gamma} with three different forms. When treating {delta} as an observable for each lens, the unbiased estimate of {Omega}_m_ can be obtained only in the scenario of including the dependence of {gamma} on both the redshift and the surface mass density, that is {Omega}_m_=0.381^+0.185^_-0.154_ at 68 per cent confidence level in the framework of a flat {Lambda}CDM model. We conclude that the significant dependencies of {gamma} on both the redshift and the surface mass density, as well as the intrinsic scatter of {delta} among the lenses, need to be properly taken into account in this method.

Keywords
  1. Gravitational lensing
  2. Galaxies
  3. Redshifted
  4. Galaxy kinematics
  5. Optical astronomy
Bibliographic source Bibcode
2019MNRAS.488.3745C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/488/3745
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/488/3745

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/488/3745
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/488/3745
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/488/3745
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/488/3745/tablea1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/488/3745/tablea1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/488/3745/tablea1?

History

2023-02-07T08:46:14Z
Resource record created
2023-02-07T08:46:14Z
Created
2023-03-20T13:51:28Z
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