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Title: Comparing Dark Energy Survey and HST–CLASH observations of the galaxy cluster RXC J2248.7–4431: Implications for stellar mass versus dark matter

Journal Article · · Monthly Notices of the Royal Astronomical Society
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  1. Univ. College London, London (United Kingdom)
  2. Univ. of Cambridge, Cambridge (United Kingdom)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States); Univ. Observatory Munich, Munich (Germany); Max Planck Institute for Extraterrestrial Physics, Garching (Germany)
  4. Princeton Univ., Princeton, NJ (United States)
  5. The Barcelona Institute of Science and Technology, Bellaterra (Barcelona) (Spain)
  6. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  7. Univ. of California, Santa Cruz, CA (United States)
  8. Univ. of Sussex, Brighton (United Kingdom)
  9. Univ. of Arizona, Tucson, AZ (United States)
  10. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
  11. Univ. Observatory Munich, Munich (Germany); Max Planck Institute for Extraterrestrial Physics, Garching (Germany)
  12. Univ. of Pennsylvania, Philadelphia, PA (United States)
  13. Univ. of Michigan, Ann Arbor, MI (United States)
  14. National Optical Astronomy Observatory, La Serena (Chile)
  15. Univ. College London, London (United Kingdom); Rhodes Univ., Grahamstown (South Africa)
  16. Univ. College London, London (United Kingdom); Institut d'Astrophysique de Paris, Paris (France); Sorbonne Univ., Paris (France)
  17. Institut d'Astrophysique de Paris, Paris (France); Sorbonne Univ., Paris (France)
  18. Univ. of Portsmouth, Portsmouth (United Kingdom)
  19. Lab. Interinstitucional de e-Astronomia - LIneA, Rio de Janeiro (Brazil); Observatorio Nacional, Rio de Janeiro (Brazil)
  20. Univ. of Illinois, Urbana, IL (United States); National Center for Supercomputing Applications, Urbana, IL (United States)
  21. The Barcelona Institute of Science and Technology, Bellaterra (Barcelona) (Spain); Institut de Ciencies de l'Espai, Barcelona (Spain)
  22. Institut de Ciencies de l'Espai, Barcelona (Spain)
  23. Stanford Univ., Stanford, CA (United States)
  24. Univ. of Portsmouth, Portsmouth (United Kingdom); Univ. of Southampton, Southampton (United Kingdom)
  25. Excellence Cluster Universe, Garching (Germany); Ludwig-Maximilians Univ., Munich (Germany)
  26. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States)
  27. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  28. The Ohio State Univ., Columbus, OH (United States)
  29. Australian Astronomical Observatory, North Ryde, NSW (Australia)
  30. Texas A & M Univ., College Station, TX (United States)
  31. Lab. Interinstitucional de e-Astronomia - LIneA, Rio de Janeiro (Brazil); Univ. de Sao Paulo, Sao Paulo (Brazil)
  32. The Barcelona Institute of Science and Technology, Bellaterra (Barcelona) (Spain); Institucio Catalana de Recerca i Estudis Avancats, Barcelona (Spain)
  33. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  34. Centro de Investigaciones Energeticas Medioambientales y Tecnologicas (CIEMAT), Madrid (Spain)
  35. Univ. of Illinois, Urbana, IL (United States); Centro de Investigaciones Energeticas, Madrid (Spain)
  36. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lab. Interinstitucional de e-Astronomia - LIneA, Rio de Janeiro (Brazil)
  37. National Center for Supercomputing Applications, Urbana, IL (United States)
  38. Univ. of Portsmouth,Portsmouth (United Kingdom)
  39. Argonne National Lab. (ANL), Lemont, IL (United States)
+ Show Author Affiliations

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 (5 filters) with those from the Hubble Space Telescope CLASH (17 filters). When the cluster spectroscopic redshift is assumed, we show that stellar masses from DES can be estimated within 25% 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*=7.0+-2.2x10^-3 within a radius of r_200c~3 Mpc. Our analysis also includes a comparison of photometric redshifts and star/galaxy separation efficiency for both datasets. 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. The stacking of all the DES clusters would reduce the errors on f* estimates and deduce important information about galaxy evolution.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
DES Collaboration
Grant/Contract Number:
FP7/291329; PF5-160138; SC0013541; AST-1138766; AYA2012-39559, ESP2013-48274, FPA2013-47986; FP7/2007-2013; 240672, 291329, and 306478; AC02-76SF00515; AC02-07CH11359; AC02-SF00515; Number AST-1138766
OSTI ID:
1349269
Alternate ID(s):
OSTI ID: 1288736; OSTI ID: 1333879
Report Number(s):
FERMILAB-PUB-16-002-AE; DES-2015-0083; arXiv:1601.00589; TRN: US1701706
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 463, Issue 2; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
surveys
galaxies: clusters: general
galaxies: evolution
galaxies: photometry