Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 463, Issue 2, Pages 1486-1499Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw2062
Keywords
surveys; galaxies: clusters: general; galaxies: evolution; galaxies: photometry
Categories
Funding
- European Research Council [FP7/291329]
- SFB-Transregio - Deutsche Forschungsgemeinschaft (DFG) [33]
- DFG cluster of excellence 'Origin and Structure of the Universe'
- NASA through the Einstein Fellowship Program [PF5-160138]
- DOE [DE-SC0013541]
- U.S. Department of Energy
- U.S. National Science Foundation
- Ministry of Science and Education of Spain
- Science and Technology Facilities Council of the United Kingdom
- Higher Education Funding Council for England
- National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign
- Kavli Institute of Cosmological Physics at the University of Chicago
- Center for Cosmology and Astro-Particle Physics at the Ohio State University
- Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University
- Financiadora de Estudos e Projetos
- Fundayao Carlos Chagas Filho de Amparo Pesquisa do Estado do Rio de Janeiro
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
- Ministerio da Ciencia, Tecnologia e Inovacao
- Deutsche Forschungsgemeinschaft
- Collaborating Institutions in the Dark Energy Survey
- National Science Foundation [AST-1138766]
- MINECO [AYA2012-39559, ESP2013-48274, FPA2013-47986]
- Centro de Excelencia Severo Ochoa [SEV-2012-0234]
- European Research Council under the European Unions [240672, 291329, 306478]
- ICREA Funding Source: Custom
- U.S. Department of Energy (DOE) [DE-SC0013541] Funding Source: U.S. Department of Energy (DOE)
- STFC [ST/J001511/1, ST/H001581/1, ST/M003574/1, ST/I000976/1, ST/L000652/1, ST/M001334/1, ST/L006529/1, ST/M005305/1, ST/N000668/1, ST/N001087/1, ST/K00090X/1, ST/I000879/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/M001334/1, ST/K00090X/1, ST/N000668/1] Funding Source: researchfish
- UK Space Agency [ST/K003135/1, ST/N002679/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1536171] Funding Source: National Science Foundation
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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(star) = (6.8 +/- 1.7) x 10(-3) within a radius of r(200c) similar or equal to 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 similar to 100 000 clusters that will be observed within this survey and yield important information about galaxy evolution.
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