Planck Union Catalog of SZ Clusters (SZ Union) v2.1

Overview

These catalogs contain a list of galaxy clusters detected through the Sunyaev-Zeldovich effect (SZ) and consist of candidate sources that were detected using multifrequency algorithms that use the distinct spectral signature of such clusters. This version of the SZ catalogs, a component of Planck Data Release 1, is derived from the data acquired by Planck between August 13 2009 and November 26 2010.

Three pipelines are used to detect SZ clusters: two independent implementations of the Matched Multi-Filter (MMF1 and MMF3), and PowellSnakes (PwS). The main catalog is constructed as the union of the catalogs from the three detection methods. The individual catalogs are provided for the expert user in order to assess the consistency of the pipelines. The union catalogue contains the coordinates and the signal-to-noise ratio of the detections and a summary of the external validation information, including external identification of a cluster and its redshift if it is available.

Name Intype Units Description
INDX int None Index in PSZ catalogue
NAME char None Name in PSZ catalogue
GLON double degrees Galactic longitude
GLAT double degrees Galactic latitude
ra double degrees Right ascension (J2000)
dec double degrees Declination (J2000)
RA_MCXC double degrees Right Ascension of the MCXC identifier
DEC_MCXC double degrees Declination of the MCXC identifier
REDSHIFT double None Redshift of cluster
REDSHIFT_TYPE char None Type of redshift
REDSHIFT_SOURCE int None Source for redshifts:
-1 No redshift available
1 MCXC updated compilation (Piffaretti et al. 2011, AA, 534,109)
2 Databases NED and SIMBAD-CDS
3 SDSS cluster catalogue (Wen et al. 2012, ApJ, 199, 34)
4 SDSS cluster catalogue (Szabo et al. 2011, ApJ, 736, 21)
5 SPT (Vanderlinde et al. 2010, 722, 1180; Williamson et al. 2011, ApJ, 738, 139W; Andersson et al. 2011, ApJ, 738, 48; Plagge et al. 2010, ApJ, 716, 1118; Reichardt et al. 2013, ApJ, 763, 127; Story et al. 2011, ApJ, 735, 36; Song et al. 2012, ApJ, 761, 22; Ruel J. 2013, PhDT; Bleem et al. arXiv.1409.0850)
6 ACT (Hasselfield et al. 2013, JCAP, 07, 008H; Marriage et al. 2011, ApJ, 737, 61; Menanteau et al. 2010, ApJ, 723, 1523; Sifon et al. 2013, ApJ, 772, 25S)
7 Search in SDSS galaxy catalogue from Planck Collab.
8 redMaPPer III catalogue (Rozo et al. arXiv.1401.7716)
10 Pan-STARRS1 Survey confirmation
20 XMM-Newton confirmation from Planck Collab.
50 ENO-imaging confirmation from Planck Collab.
60 WFI-imaging confirmation from Planck Collab.
65 NTT-spectroscopic confirmation from Planck Collab.
500 RTT confirmation from Planck Collab.
600 NOT confirmation from Planck Collab.
650 GEMINI-spectroscopic confirmation from Planck Collab.
REDSHIFT_REF char None Bibliographical references for the redshift
ALT_NAME char None Some alternative names
YZ_500 double 10^-4 arcmin squ Compton parameter in R500 from SZ-proxy
ERRP_YZ_500 double 10^-4 arcmin squ Upper error in YZ_500
ERRM_YZ_500 double 10^-4 arcmin squ Lower error in YZ_500
M_YZ_500 double 10^14 solar mass Derived mass estimate from SZ proxy
ERRP_M_YZ_500 double 10^14 solar mass Upper error on M_YZ_500
ERRM_M_YZ_500 double 10^14 solar mass Lower error on M_YZ_500
S_X double erg/s/cm2 Unabsorbed X-ray flux in 5 arcmin aperture in the band [0.1-2.4] keV
The aperture is centred on the Planck position, except for candidates associated with a BSC source for which we adopt the X-ray position. For sources with (S/N)_{RASS} < 1sigma, we only quote an upper limit.
ERR_S_X double erg/s/cm2 Error on unabsorbed X-ray flux
Y_PSX_500 double 10^-4 arcmin squ SZ signal based on X-ray size and position from MCXM catalogue
SN_PSX double None Signal to noise of Y_PSX_500
PIPELINE int None Source pipeline: 1 = MMF1; 2 = MMF3; 3 = PwS
PIPE_DET int None Pipelines which detect this object
Order of the digits: hundreds = MMF1; tens = MMF3; units = PwS. If it is detected then the corresponding digit is set to 1, otherwise it is set to 0.
PCCS char None Indicates whether detection matches any PCCS source
VALID int None External validation status
Values are: 1 = candidate of class 1; 2 = candidate of class 2; 3 = candidate of class 3; 10 = Planck cluster confirmed by follow-up; 20 = known cluster.
ID_EXT char None External identifier of cluster
POS_ERR double arcmin Position uncertainty (95% confidence level)
SNR double None Signal-to-noise ratio of the detection
COSMO char None Detection is in the cosmology sample
CMNT char None Detection has a comment in the associated text file
The comments on the detections in the catalogue are contained in a text file called COM_PCCS_SZ-union_comments_R1.11.txt (available at: COM_PCCS_SZ-union_comments_R1.11.txt), which contains one line for each detection in the union catalogue with COMMENT = T. The line starts with the INDEX and NAME of the detection to facilitate cross-referencing. The remainder of the line is the comment on that detection.
QN double None Artificial neural network-based quality assessment of the SZ detection