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Title: Baryon content of massive galaxy clusters at 0.57 < z < 1.33

Here, we study the stellar, Brightest Cluster Galaxy (BCG) and intracluster medium (ICM) masses of 14 South Pole Telescope (SPT) selected galaxy clusters with median redshift z = 0.9 and median mass M500 = 6 x 1014M. We estimate stellar masses for each cluster and BCG using six photometric bands spanning the range from the ultraviolet to the near-infrared observed with the VLT, HST and Spitzer. The ICM masses are derived from Chandra and XMM-Newton X-ray observations, and the virial masses are derived from the SPT Sunyaev-Zel'dovich Effect signature. At z = 0.9 the BCG mass M*BCG constitutes 0.12 ± 0.01% of the halo mass for a 6 x 1014M cluster, and this fraction falls as M500-0.58±0.007. The cluster stellar mass function has a characteristic mass M0 = 1011.0±0.1M, and the number of galaxies per unit mass in clusters is larger than in the field by a factor 1.65 ± 0.2. Both results are consistent with measurements on group scales and at lower redshift.
 [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8] ;  [1] ;  [1] ;  [4] ;  [1] ;  [9] ;  [1] ;  [1] ;  [10] ;  [1] ;  [11] ;  [12] more »;  [13] ;  [14] ;  [15] ;  [15] ;  [16] « less
  1. Ludwig-Maximilians-Univ., Munchen (Germany); Excellence Cluster Universe, Garching (Germany)
  2. Ludwig-Maximilians-Univ., Munchen (Germany); Excellence Cluster Universe, Garching (Germany); Max-Planck-Institut fur extraterrestrische Physik, Garching (Germany)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  4. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  5. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Harvard Univ., Cambridge, MA (United States)
  6. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States)
  7. Univ. of Chicago, Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  8. Univ. of Missouri, Kansas City, MO (United States)
  9. Univ. of Florida, Gainesville, FL (United States)
  10. Univ. of Melbourne, Parkville (Australia)
  11. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  12. Univ. of California, Davis, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  13. Korea Astronomy and Space Science Institute, Daijeon (Republic of Korea)
  14. Argelander-Institut fur Astronomie, Bonn (Germany)
  15. Ludwig-Maximilians-Univ., Munchen (Germany)
  16. Ludwig-Maximilians-Univ., Munchen (Germany); Cerro Tololo Inter-American Observatory, La Serena (Chile)
Publication Date:
OSTI Identifier:
Report Number(s):
FERMILAB-PUB--14-542-AE; arXiv:1412.7823
Journal ID: ISSN 0035-8711; 1335615
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 455; Journal Issue: 1; Journal ID: ISSN 0035-8711
Royal Astronomical Society
Research Org:
Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
Country of Publication:
United States
79 ASTRONOMY AND ASTROPHYSICS galaxy: evolution; galaxies: clusters: general; large-scale structure of Universe; X-rays: galaxies: clusters