Abstract
We describe the all-sky Planck catalogue of clusters and
cluster candidates derived from Sunyaev-Zeldovich (SZ)
effect detections using the first 15.5 months of Planck
satellite observations. The catalogue contains 1227
entries, making it over six times the size of the Planck
Early SZ (ESZ) sample and the largest SZ-selected
catalogue to date. It contains 861 confirmed clusters, of
which 178 have been confirmed as clusters, mostly through
follow-up observations, and a further 683 are
previously-known clusters. The remaining 366 have the
status of cluster candidates, and we divide them into
three classes according to the quality of evidence that
they are likely to be true clusters. The Planck SZ
catalogue is the deepest all-sky cluster catalogue, with
redshifts up to about one, and spans the broadest cluster
mass range from (0.1 to 1.6) × 1015 M?. Confirmation of
cluster candidates through comparison with existing
surveys or cluster catalogues is extensively described,
as is the statistical characterization of the catalogue
in terms of completeness and statistical reliability. The
outputs of the validation process are provided as
additional information. This gives, in particular, an
ensemble of 813 cluster redshifts, and for all these
Planck clusters we also include a mass estimated from a
newly-proposed SZ-mass proxy. A refined measure of the SZ
Compton parameter for the clusters with X-ray
counter-parts is provided, as is an X-ray flux for all
the Planck clusters not previously detected in X-ray
surveys.
Original language | English |
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Article number | A29 |
Number of pages | 41 |
Journal | Astronomy and Astrophysics |
Volume | 571 |
DOIs | |
Publication status | Published - 2014 |
MoE publication type | A1 Journal article-refereed |
Keywords
- universe
- galaxies
- cluster catalogs