Galaxy-Galaxy Lensing in Dark Energy Survey Science Verification Data

ORAL

Abstract

We present galaxy-galaxy lensing results from 150 square degrees of Dark Energy Survey science verification data. Our lens sample consists of red galaxies which are specifically selected to have a low photometric redshift outlier rate. The lenses cover a wide redshift range 0.2 $<$ z $<$ 0.8, which divided into three bins yields a S/N $>$ 20 lensing measurement for each bin. The result is checked by performing a number of null tests, including various checks on the shear catalog and photometric redshifts. Covariances from jackknife subsamples of the data are validated with a suite of 100 mock surveys. We fit an HOD model that constrains the lens sample's central halo mass, mass-luminosity scatter, and satellite population.

Authors

  • Juliana Kwan

    • University of Pennsylvania
  • Bhuvnesh Jain

    • University of Pennsylvania
  • Joseph Clampitt

    • University of Pennsylvania
  • Carles Sanchez

    • University of Barcelona
  • Niall Maccrann

    • Manchester University