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Title: The WaZP galaxy cluster sample of the dark energy survey year 1

Journal Article · · Monthly Notices of the Royal Astronomical Society
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  1. Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil;Laboratoire d’Annecy De Physique Des Particules (LAPP), 9 Chemin de Bellevue, F-74940 Annecy, France
  2. Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil;Université Côte d’Azur, OCA, CNRS, Lagrange, UMR 7293, CS 34229, F-06304 Nice Cedex 4, France
  3. Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil;Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil
  4. Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil;Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP 05314-970, Brazil
  5. Fermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USA
  6. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
  7. Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UK
  8. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France;Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, F-75014 Paris, France
  9. Department of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UK
  10. Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
  11. Instituto de Astrofisica de Canarias, E-38205 La Laguna, Tenerife, Spain;Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain
  12. Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USA;National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
  13. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) Spain
  14. INAF-Osservatorio Astronomico di Trieste, via G. B. Tiepolo 11, I-34143 Trieste, Italy;Institute for Fundamental Physics of the Universe, Via Beirut 2, I-34014 Trieste, Italy
  15. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
  16. Department of Physics, IIT Hyderabad, Kandi, Telangana 502285, India
  17. Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
  18. Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA;Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
  19. Institute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029 Blindern, NO-0315 Oslo, Norway
  20. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
  21. Institut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, Spain;Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain
  22. Fermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USA;Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA
  23. School of Mathematics and Physics, University of Queensland, Brisbane, QLD 4072, Australia
  24. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA;Department of Physics, The Ohio State University, Columbus, OH 43210, USA
  25. Center for Astrophysics, Harvard and Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
  26. Australian Astronomical Optics, Macquarie University, North Ryde, NSW 2113, Australia;Lowell Observatory, 1400 Mars Hill Rd, Flagstaff, AZ 86001, USA
  27. Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA
  28. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) Spain;Institució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, Spain
  29. Physics Department, 2320 Chamberlin Hall, University of Wisconsin-Madison, 1150 University Avenue Madison, WI 53706-1390, USA
  30. National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA;Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
  31. Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil;Instituto de Física, UFRGS, Caixa Postal 15051, Porto Alegre, RS 91501-970, Brazil
  32. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
  33. School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK
  34. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
  35. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA
+ Show Author Affiliations

In this work, we present a new (2+1)D galaxy cluster finder based on photometric redshifts called Wavelet Z Photometric (WaZP) applied to DES first year (Y1A1) data. The results are compared to clusters detected by the South Pole Telescope (SPT) survey and the redMaPPer cluster finder, the latter based on the same photometric data. WaZP searches for clusters in wavelet-based density maps of galaxies selected in photometric redshift space without any assumption on the cluster galaxy populations. The comparison to other cluster samples was performed with a matching algorithm based on angular proximity and redshift difference of the clusters. It led to the development of a new approach to match two optical cluster samples, following an iterative approach to minimize incorrect associations. The WaZP cluster finder applied to DES Y1A1 galaxy survey (1511.13 deg2 up to mi = 23 mag) led to the detection of 60 547 galaxy clusters with redshifts 0.05 < z < 0.9 and richness Ngals ≥ 5. Furthermore, considering the overlapping regions and redshift ranges between the DES Y1A1 and SPT cluster surveys, all sz based SPT clusters are recovered by the WaZP sample. The comparison between WaZP and redMaPPer cluster samples showed an excellent overall agreement for clusters with richness Ngals (λ for redMaPPer) greater than 25 (20), with 95 per cent recovery on both directions. Based on the cluster cross-match, we explore the relative fragmentation of the two cluster samples and investigate the possible signatures of unmatched clusters.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Contributing Organization:
DES Collaboration
Grant/Contract Number:
AC02-07CH11359; AC05-00OR22725; SC0019193
OSTI ID:
1706164
Alternate ID(s):
OSTI ID: 1817469; OSTI ID: 1872370
Report Number(s):
FERMILAB-PUB-20-419-AE; arXiv:2008.08711; oai:inspirehep.net:1812602
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 502, Issue 3; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
data analysis
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galaxy clusters
galaxies
distances and redshifts