期刊
ASTRONOMY & ASTROPHYSICS
卷 594, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201525823
关键词
cosmology: observations; galaxies: clusters: general; catalogs
资金
- ESA
- CNES (France)
- CNRS/INSU-IN2P3-INP (France)
- ASI (Italy)
- CNR (Italy)
- INAF (Italy)
- NASA (USA)
- DoE (USA)
- STFC (UK)
- UKSA (UK)
- CSIC (Spain)
- MINECO (Spain)
- JA (Spain)
- RES (Spain)
- Tekes (Finland)
- AoF (Finland)
- CSC (Finland)
- DLR (Germany)
- MPG (Germany)
- CSA (Canada)
- DTU Space (Denmark)
- SER/SSO (Switzerland)
- RCN (Norway)
- SFI (Ireland)
- FCT/MCTES (Portugal)
- ERC (EU)
- PRACE (EU)
- Higher Education Funding Council for England
- Science and Technology Facilities Council
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy Office of Science
- Science and Technology Facilities Council [ST/K002821/1, ST/F01239X/1, ST/M001172/1, ST/K001051/1, ST/K004131/1, ST/L000768/1, ST/L000393/1] Funding Source: researchfish
- UK Space Agency [ST/N001095/1, ST/N001206/1, ST/H001239/1] Funding Source: researchfish
We present the all-sky Planck catalogue of Sunyaev-Zeldovich (SZ) sources detected from the 29 month full-mission data. The catalogue (PSZ2) is the largest SZ-selected sample of galaxy clusters yet produced and the deepest systematic all-sky survey of galaxy clusters. It contains 1653 detections, of which 1203 are confirmed clusters with identified counterparts in external data sets, and is the first SZ-selected cluster survey containing > 10(3) confirmed clusters. We present a detailed analysis of the survey selection function in terms of its completeness and statistical reliability, placing a lower limit of 83% on the purity. Using simulations, we find that the estimates of the SZ strength parameter Y-5R500 are robust to pressure-profile variation and beam systematics, but accurate conversion to Y-500 requires the use of prior information on the cluster extent. We describe the multi-wavelength search for counterparts in ancillary data, which makes use of radio, microwave, infra-red, optical, and X-ray data sets, and which places emphasis on the robustness of the counterpart match. We discuss the physical properties of the new sample and identify a population of low-redshift X-ray under-luminous clusters revealed by SZ selection. These objects appear in optical and SZ surveys with consistent properties for their mass, but are almost absent from ROSAT X-ray selected samples.
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