Gruen, D;
Zhang, Y;
Palmese, A;
Yanny, B;
Busti, V;
Hoyle, B;
Melchior, P;
... Walker, AR; + view all
(2019)
Dark Energy Survey Year 1 Results: The effect of intracluster light on photometric redshifts for weak gravitational lensing.
Monthly Notices of the Royal Astronomical Society
, 488
(3)
pp. 4389-4399.
10.1093/mnras/stz2036.
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Abstract
We study the effect of diffuse intracluster light on the critical surface mass density estimated from photometric redshifts of lensing source galaxies, and the resulting bias in a weak lensing measurement of galaxy cluster mass. Under conservative assumptions, we find the bias to be negligible for imaging surveys like the Dark Energy Survey (DES) with a recommended scale cut of >=200 kpc distance from cluster centers. For significantly deeper source catalogs from present and future surveys like the Large Synoptic Survey Telescope (LSST) program, more conservative scale and source magnitude cuts or a correction of the effect may be necessary to achieve per-cent level lensing measurement accuracy, especially at the massive end of the cluster population.
| Type: | Article |
|---|---|
| Title: | Dark Energy Survey Year 1 Results: The effect of intracluster light on photometric redshifts for weak gravitational lensing |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stz2036 |
| Publisher version: | http://dx.doi.org/10.1093/mnras/stz2036 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | gravitational lensing: weak, galaxies: clusters: general, galaxies: distances and redshifts, cosmology: observations |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10080295 |
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