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Title: Galaxy Clusters Selected via the Sunyaev–Zel’dovich Effect in the SPTpol 100-square-degree Survey

Journal Article · · The Astronomical Journal (Online)
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  1. Univ. of California, Berkeley, CA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States)
  3. LSST, Tucson, AZ (United States); Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  4. Cardiff Univ. (United Kingdom)
  5. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  6. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  7. National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
  8. Univ. of Chicago, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  9. Univ. of Melbourne (Australia)
  10. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States); Ludwig-Maximilians-Universität, München (Germany)
  11. Univ. of Missouri, Columbia, MO (United States)
  12. McGill Univ., Montreal, QC (Canada); Univ. of KwaZulu- Natal, Durban (South Africa)
  13. Univ. of Chicago, IL (United States)
  14. Univ. of Chicago, IL (United States); California Institute of Technology (CalTech), Pasadena, CA (United States)
  15. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  16. McGill Univ., Montreal, QC (Canada); Canadian Inst. for Advanced Research, Toronto, ON (Canada)
  17. Univ. of Colorado, Boulder, CO (United States)
  18. Univ. of Chicago, IL (United States); Harvey Mudd College, Claremont, CA (United States)
  19. Univ. of California, Berkeley, CA (United States); European Southern Observatory, Garching (Germany)
  20. McGill Univ., Montreal, QC (Canada)
  21. Canadian Institute for Advanced Research, Toronto, ON (Canada); Univ. of Illinois at Urbana-Champaign, IL (United States)
  22. Univ. of California, Davis, CA (United States)
  23. SLAC National Accelerator Lab., Menlo Park, CA (United States); National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
  24. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  25. Univ. of Michigan, Ann Arbor, MI (United States)
  26. Univ. of Chicago, IL (United States); Univ. of Oslo (Norway)
  27. Univ. of Illinois at Urbana-Champaign, IL (United States)
  28. Univ. of Chicago, IL (United States); Univ. of Colorado, Boulder, CO (United States)
  29. Argonne National Lab. (ANL), Argonne, IL (United States)
  30. Univ. of Minnesota, Minneapolis, MN (United States)
  31. Case Western Reserve Univ., Cleveland, OH (United States)
  32. Yale Univ., New Haven, CT (United States)
  33. Univ. of Trieste (Italy); IFPU—Institute for Fundamental Physics of the Universe, Trieste (Italy); INAF-Osservatorio Astronomico di Trieste (Italy)
  34. Univ. of Chicago, IL (United States); School of the Art Institute of Chicago, IL (United States)
  35. McGill Univ., Montreal, QC (Canada); Three-Speed Logic, Inc., Victoria, BC (Canada)
  36. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  37. Stanford Univ., CA (United States)
  38. Univ. of Toronto, ON (Canada)
  39. Univ. of Maryland, College Park, MD (United States)
  40. Univ. of California, Los Angeles, CA (United States)
+ Show Author Affiliations

© 2020. The American Astronomical Society. All rights reserved.. We present a catalog of galaxy cluster candidates detected in 100 square degrees surveyed with the SPTpol receiver on the South Pole Telescope. The catalog contains 89 candidates detected with a signal-to-noise ratio greater than 4.6. The candidates are selected using the Sunyaev-Zel'dovich effect at 95 and 150 GHz. Using both space- and ground-based optical and infrared telescopes, we have confirmed 81 candidates as galaxy clusters. We use these follow-up images and archival images to estimate photometric redshifts for 66 galaxy clusters and spectroscopic observations to obtain redshifts for 13 systems. An additional two galaxy clusters are confirmed using the overdensity of near-infrared galaxies only and are presented without redshifts. We find that 15 candidates (18% of the total sample) are at redshift z ≥ 1.0, with a maximum confirmed redshift of zmax = 1.38 ± 0.10. We expect this catalog to contain every galaxy cluster with M500c = 2.6 ×1014M⊙ h70-1 and z > 0.25 in the survey area. The mass threshold is approximately constant above z = 0.25, and the complete catalog has a median mass of approximately M500c = 2.7 ×1014M⊙ h70-1. Compared to previous SPT works, the increased depth of the millimeter-wave data (11.2 and 6.5 μK-arcmin at 95 and 150 GHz, respectively) makes it possible to find more galaxy clusters at high redshift and lower mass.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); Gordon and Betty Moore Foundation; National Aeronautics and Space Administration (NASA); Australian Research Council
Contributing Organization:
SPT Collaboration
Grant/Contract Number:
AC02-76SF00515; AC02-07CH11359; AC02-06CH11357; AC02-05CH11231; PLR-1248097; PLR-1852617; PHY-0114422; GBMF 947; DGE 1752814; AST-0956135; AST-1716965; CSSI-1835865; NNX15AE12G; 71676; R165SBKTMA; DP150103208
OSTI ID:
1617046
Alternate ID(s):
OSTI ID: 1568869; OSTI ID: 1632305; OSTI ID: 1737603
Report Number(s):
arXiv:1907.09621; FERMILAB-PUB-19-428-AE; TRN: US2106715
Journal Information:
The Astronomical Journal (Online), Vol. 159, Issue 3; ISSN 1538-3881
Publisher:
IOP Publishing - AAASCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 34 works
Citation information provided by
Web of Science

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