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Title

Planck 2015 results. XXVII. The second Planck catalogue of Sunyaev-Zeldovich sources

AuthorsAde, P. A. R.; Sutton, D.; Barreiro, R. Belén ; Bernard, J. P.; Bouchet, F. R.; Bonavera, Laura ; Curto, Andrés ; Zotti, G. de; Diego, José María ; González-Nuevo, J. ; Herranz, D. ; Hernández-Monteagudo, C.; Levrier, F.; López-Caniego, M. ; Macías-Pérez, J. F.; Martínez-González, Enrique ; Matarrese, S.; Rocha, G.; Toffolatti, L. ; Vielva, P. ; Rebolo López, Rafael; Planck Collaboration
KeywordsCosmology: observations
Galaxies: clusters: general
Catalogs
Issue Date2016
PublisherEDP Sciences
CitationAstronomy and Astrophysics 594: A27 (2016)
AbstractWe 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 surveyof 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 >103 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 Y5R500are robust to pressure-profile variation and beam systematics, but accurate conversion to Y500 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.
DescriptionCatalogs and data.-- et al.
Publisher version (URL)http://dx.doi.org/10.1051/0004-6361/201525823
URIhttp://hdl.handle.net/10261/140614
DOI10.1051/0004-6361/201525823
Identifiersdoi: 10.1051/0004-6361/201525823
e-issn: 1432-0746
issn: 0004-6361
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