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Dark Energy Survey Year 1 results: the effect of intracluster light on photometric redshifts for weak gravitational lensing
journal contribution
posted on 2023-06-09, 19:22 authored by D Gruen, Y Zhang, A Palmese, B Yanny, V Busti, B Hoyle, P Melchior, C J Miller, E Rozo, E S Rykoff, T N Varga, F B Abdalla, S Allam, Kathy RomerKathy Romer, DES CollaborationWe 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 ?nd the bias to be negligible for imaging surveys like the Dark Energy Survey with a recommended scale cut of =200kpc distance from cluster centres. For signi?cantly deeper lensing source galaxy catalogues from present and future surveys like the Large Synoptic Survey Telescope program, more conservative scale and source magnitude cuts or a correction of the effect may be necessary to achieve percent level lensing measurement accuracy, especially at the massive end of the cluster population.
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Publication status
- Published
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- Published version
Journal
Monthly Notices of the Royal Astronomical SocietyISSN
0035-8711Publisher
Oxford University PressExternal DOI
Issue
3Volume
488Page range
4389-4399Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-10-15First Open Access (FOA) Date
2019-10-15First Compliant Deposit (FCD) Date
2019-10-14Usage metrics
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