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Dark Energy Survey Year 1 results: the effect of intracluster light on photometric redshifts for weak gravitational lensing

Author(s): Gruen, D; Zhang, Y; Palmese, A; Yanny, B; Busti, V; et al

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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 he negligible for imaging surveys like the Dark Energy Survey with a recommended scale cut of >= 200 kpc distance from cluster centres. For significantly 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.
Publication Date: Sep-2019
Electronic Publication Date: 27-Jul-2019
Citation: Gruen, D, Zhang, Y, Palmese, A, Yanny, B, Busti, V, Hoyle, B, Melchior, P, Miller, CJ, Rozo, E, Rykoff, ES, Varga, TN, Abdalla, FB, Allam, S, Annis, J, Avila, S, Brooks, D, Burke, DL, Rosell, A Carnero, Carrasco Kind, M, Carretero, J, Cawthon, R, Crocce, M, Cunha, CE, da Costa, LN, Davis, C, De Vicente, J, Desai, S, Diehl, HT, Dietrich, JP, Drlica-Wagner, A, Flaugher, B, Fosalba, P, Frieman, J, Garcia-Bellido, J, Gaztanaga, E, Gerdes, DW, Gruendl, RA, Gschwend, J, Hollowood, DL, Honscheid, K, James, DJ, Jeltema, T, Krause, E, Kron, R, Kuehn, K, Kuropatkin, N, Lahav, O, Lima, M, Lin, H, Maia, MAG, Marshall, JL, Menanteau, F, Miquel, R, Ogando, RLC, Plazas, AA, Romer, AK, Scarpine, V, Sevilla-Noarbe, I, Smith, M, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D, Vikram, V, Walker, AR, Collaboration, DES. (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 (4389 - 4399. doi:10.1093/mnras/stz2036
DOI: doi:10.1093/mnras/stz2036
ISSN: 0035-8711
EISSN: 1365-2966
Pages: 4389 - 4399
Type of Material: Journal Article
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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