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

Ade, P A R ; Aghanim, N ; Arnaud, M ; Ashdown, M ; Aumont, J ; Baccigalupi, C ; Banday, A J ; Barreiro, R B ; Barrena, R

Astronomy and astrophysics (Berlin), 2016-10, Vol.594, p.A27 [Periódico revisado por pares]

United States: EDP Sciences

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  • Título:
    Planck 2015 results: XXVII. The second Planck catalogue of Sunyaev-Zeldovich sources
  • Autor: Ade, P A R ; Aghanim, N ; Arnaud, M ; Ashdown, M ; Aumont, J ; Baccigalupi, C ; Banday, A J ; Barreiro, R B ; Barrena, R
  • Assuntos: ASTRONOMY AND ASTROPHYSICS ; Astrophysics ; Catalogues ; Clusters ; Cosmology and Extra-Galactic Astrophysics ; cosmology observations ; galaxies clusters: general ; Samples ; Sciences of the Universe ; Statistical analysis ; Statistical methods ; Sunyaev-Zeldovich effect ; X-rays
  • É parte de: Astronomy and astrophysics (Berlin), 2016-10, Vol.594, p.A27
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    AC02-76SF00515; AC02-05CH11231
    USDOE Office of Science (SC)
  • Descrição: 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 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 >10 super(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 sub(5)R500are robust to pressure-profile variation and beam systematics, but accurate conversion to Y sub(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.
  • Editor: United States: EDP Sciences
  • Idioma: Inglês;Norueguês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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