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Palmese, A; Lahav, O; Banerji, M; Gruen, D; Jouvel, S; Melchior, P; Aleksic, J; Annis, J; Diehl, H T; Hartley, W G; Jeltema, T; Romer, A K; Rozo, E; Rykoff, E S; Seitz, S; Suchyta, E; Zhang, Y; Abbott, T MC; Abdalla, F B; Allam, S; Benoit-Levy, A; Bertin, E; Brooks, D; Buckley-Geer, E; Burke, D L; Capozzi, D; Rosell, A Carnero; Kind, M Carrasco; Carretero, J; Crocce, M; Cunha, C E; D'Andrea, C B; da Costa, L N; Desai, S; Dietrich, J P; Doel, P; Estrada, J; Evrard, A E; Flaugher, B; Frieman, J; Gerdes, D W; Goldstein, D A; Gruendl, R A; Gutierrez, G; Honscheid, K; James, D J; Kuehn, K; Kuropatkin, N; Li, T S; Lima, M; et. al
Monthly notices of the Royal Astronomical Society, 12/2016, Letnik: 463, Številka: 2Journal Article
We derive the stellar mass fraction in the galaxy cluster RXC J2248.7-4431 observed with the Dark Energy Survey (DES) during the Science Verification period. We compare the stellar mass results from DES (five filters) with those from the Hubble Space Telescope Cluster Lensing And Supernova Survey (CLASH; 17 filters). When the cluster spectroscopic redshift is assumed, we show that stellar masses from DES can be estimated within 25 per cent of CLASH values. We compute the stellar mass contribution coming from red and blue galaxies, and study the relation between stellar mass and the underlying dark matter using weak lensing studies with DES and CLASH. An analysis of the radial profiles of the DES total and stellar mass yields a stellar-to-total fraction of f... = (6.8 plus or minus 1.7) x 10 super( -3) within a radius of r sub( 200c) ... 2 Mpc. Our analysis also includes a comparison of photometric redshifts and star/galaxy separation efficiency for both data sets. We conclude that space-based small field imaging can be used to calibrate the galaxy properties in DES for the much wider field of view. The technique developed to derive the stellar mass fraction in galaxy clusters can be applied to the ~100 000 clusters that will be observed within this survey and yield important information about galaxy evolution. (ProQuest: ... denotes formulae/symbols omitted.)
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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