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PLANCKSZ - Planck Catalog of Sunyaez-Zeldovich Sources Release 1



This table contains the all-sky Planck catalog of clusters and cluster candidates derived from Sunyaev-Zeldovich (SZ) effect detections using the first 15.5 months of Planck satellite observations. The catalog contains 1227 entries, making it over six times the size of the Planck Early SZ (ESZ) sample and the largest SZ-selected catalog 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 the authors divide them into three classes according to the quality of evidence that they are likely to be true clusters. The Planck SZ catalog is the deepest all-sky cluster catalog, with redshifts up to about one, and spans the broadest cluster mass range from (0.1 to 1.6) x 1015 Msun. In the reference paper, confirmation of cluster candidates through comparison with existing surveys or cluster catalogs is extensively described, as is the statistical characterization of the catalog in terms of completeness and statistical reliability. The outputs of the validation process are provided in the table as additional information. This gives, in particular, an ensemble of 813 cluster redshifts, and for all these Planck clusters the authors also include a mass estimated from a newly-proposed SZ-mass proxy in a separate table to be made available at In this latter table, 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.

Catalog Bibcode



Planck 2013 Results. XXIX. Planck Catalogue of Sunyaev-Zeldovich Sources
     Planck Collaboration
    <Astron. Astrophys.>


This table was created by the HEASARC in May 2013 based on CDS Catalog VIII/91 files psz1.dat and notes.dat.


A unique identification number for each source in the catalog, determined by the order of the clusters in the union catalog, and sorted into order of increasing Galactic longitude.

The designation of the cluster/cluster candidate, e.g., 'PSZ1', where PSZ1 stand for 'Planck Sunyaev-Zeldovich, Release 1', and the numerical string is the truncated Galactic coordinates of the source.

The Right Ascension of the cluster/cluster candidate in the selected equinox. This was given in J2000.0 decimal degrees to a precision of 10-4 degrees (0.36 arcseconds) in the original table.

The Declination of the cluster/cluster candidate in the selected equinox. This was given in J2000.0 decimal degrees to a precision of 10-4 degrees (0.36 arcseconds) in the original table.

The Galactic Longitude of the cluster/cluster candidate.

The Galactic Latitude of the cluster/cluster candidate.

The uncertainty in the position of the cluster/cluster candidate, in arcminutes.

The signal-to-noise Ratio of the S-Z detection for the cluster/cluster candidate. See Section 2.3.1 of the reference paper for more details.

The particular detection pipeline from which the information for the source detection was taken (see Section 2.2 of the reference paper for more details):

   1 = MMF1 (matched multi-filter algorithm, implementation 1),
   2 = MMF3 (matched multi-filter algorithm, implementation 3),
   3 = PwS (PowellSnakes algorithm).

A bitmask indicating which pipelines (detection algorithms) had significant (S/N > 4.5) detections for the source, in the order MMF1/MMF3/PwS. Thus, a value of '001' indicates that only the PowellSnakes algorithm detected that source, while a value of '111' indicates that it was detected by all 3 algorithms.

This flag parameter is set to 1 to indicate that the S-Z detection has a matching source in one or more of the 9 Planck Catalogs of Compact Source (PCCS) single-frequency catalogs.

The external validation status of the cluster/cluster candidate, as follows:

       20 = previously-known cluster;
       10 = new confirmed Planck cluster;
        1 = CLASS1 (high reliability) candidate ;
        2 = CLASS2 (good reliability) candidate;
        3 = CLASS3 (lower reliability) candidate.

The first external identifier for a previously known cluster.

The redshift of the cluster as reported from the external validation.

This flag parameter is set to 1 to indicate that the cluster/cluster candidate is included in the sample used for cosmological analysis in Paper XX of the Planck 2013 Results set of papers.

A note regarding the source.

Contact Person

Questions regarding the PLANCKSZ database table can be addressed to the HEASARC User Hotline.

Page Author: Browse Software Development Team
Last Modified: 22-Jan-2014