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Planck Catalogue of Compact Sources[edit]

Product description[edit]

Sky distribution of the PCCS sources at three different channels: 30GHz (pink circles), 143GHz (magenta circles) and 857GHz (green circles). The dimension of the circles is related to the brightness of the sources and the beam size of each channel.

A general description of the product, including e.g. figures related to the contents (e.g. maps, tables), and some explanation of its scientific meaning. If there are scientific warnings about the use of the product (User’s caveats), they should also be given here, or at least references to other explanatory documents (papers etc).

The Planck Catalogue of Compact Sources (PCCS) comprises a set of nine single-frequency source catalogues. The catalogues contain high-reliability sources, both Galactic and extragalactic, detected over the entire sky, making use of the nominal mission data. No polarization information is provided for the sources at this time. The PCCS differs in philosophy from the ERCSC in that it puts more emphasis on the completeness of the catalogue, with-out reducing notably the reliability of the detected sources. The greater amount of data, different selection process and the improvements in the calibration and map-making processing (#planck2013-p02,#planck2013-p03 and references therein) help the PCCS to improve upon the performance of the ERCSC.

Table 1: PCCS characteristics
Channel 30 44 70 100 143 217 353 545 857
Frequency [GHz] 28.4 44.1 70.4 100.0 143.0 217.0 353.0 545.0 857.0
Beam FWHM [arcmin] 32.38 27.10 13.30 9.88 7.18 4.87 4.65 4.72 4.39
SNR threshold 4.0 4.0 4.0 4.6 4.7 4.8 4.9/6.0 4.7/7.0 4.9/7.0
# 1256 731 939 2813 4616 14215 18507 14572 20076
# (|b| > 30º) 572 258 332 599 795 1523 2074 1694 3804

Before using the PCCS, please read the Cautionary Notes in the PCCS general description section.

For full details, see paper #planck2013-p05.

Production process[edit]

For a description of the production and validation processes of the PCCS see the corresponding section.


The data obtained from the Planck nominal mission between 2009 August 13 and 2010 November 27, corresponding to operational days 91--636, have been processed into full-sky maps by the HFI and LFI Data Processing Centres (DPCs). A description of the processing can be found in #planck2013-p02,#planck2013-p03. The data consist of two complete sky surveys and 60% of the third survey. This implies that the flux densities of sources obtained from the nominal mission maps are the average of at least two observations. The nine Planck frequency channel maps are used as input to the source detection pipelines. For the high-frequency channels, 353, 545 and 857 GHz, the model of the Zodiacal Light Emission (ZLE) (?) has been subtracted from the maps before detecting the sources. The relevant properties of the frequency maps and main parameters used to generate the catalogues are summarized in Table 1.

A list (and brief description to the extent possible) of the input data used to generate this product (down to file names), as well as any external ancillary data sets which were used.

To be reviewed and compiled by Joaquin/Mark.

Related products[edit]

A description of other products that are related and share some commonalities with the product being described here. E.g. if the description is of a generic product (e.g. frequency maps), all the products falling into that type should be listed and referenced.

link to pages with other catalogues

  1. ERCSC
  2. SZ catalogue

File names[edit]


Meta Data[edit]

The PCCS source list in each frequency is structured as a FITS binary table having one row for each detected source.

The FITS primary header will have the following structure:

FITS primary header
FITS Keyword Data Type Units Description
VERSION String Version of PCCS
DATE String Date file created:yyyy-mm-dd
ORIGIN String Name of organization responsible for the data (LFI-DPCHFI-DPC)
CREATOR String Pipeline Version
DATE-OBS String days Start-up time of the survey: yyyy-mm-dd
DATE-END String days Ending time of the survey: yyyy-mm-dd

The Fits extension is composed by several columns described below:

FITS header
Column Name Data Type Units Description
NAME String Source name – see Note 1
Source Position
GLON Real*8 degrees Galactic longitude based on extraction algorithm
GLAT Real*8 degrees Galactic latitude based on extraction algorithm
RA Real*8 degrees Right ascension (J2000) transformed from (GLON,GLAT)
DEC Real*8 degrees Declination (J2000) transformed from (GLON,GLAT)
DETFLUX Real*4 mJy Flux density of source as determined by detection method
DETFLUX_ERR Real*4 mJy Uncertainty (1 sigma) in derived flux density from detection method
APERFLUX Real*4 mJy Flux density of source as determined from the aperture photometry
APERFLUX_ERR Real*4 mJy Uncertainty (1 sigma) in derived flux density from the aperture photometry
PSFFLUX Real*4 mJy Flux density of source as determined from PSF fitting
PSFFLUX_ERR Real*4 mJy Uncertainty (1 sigma) in derived flux density from PSF fitting
GAUFLUX Real*4 mJy Flux density of source as determined from 2-D Gaussian fitting
GAUFLUX_ERR Real*4 mJy Uncertainty (1 sigma) in derived flux density from 2-D Gaussian fitting
GAU_SEMI1 Real*4 arcmin Gaussian fit along axis 1 (see Note 4 for axis definition)
GAU_SEMI1_ERR Real*4 arcmin Uncertainty (1 sigma) in derived Gaussian fit along axis 1
GAU_SEMI2 Real*4 arcmin Gaussian fit along axis 2
GAU_SEMI2_ERR Real*4 arcmin Uncertainty (1 sigma) in derived Gaussian fit along axis 2
GAU_THETA Real*4 deg Gaussian fit orientation angle counting anti-clockwise from the x -axis
GAU_THETA_ERR Real*4 deg Uncertainty (1 sigma) in derived gaussian fit orientation angle
GAU_FWHM_EFF Real*4 arcmin Gaussian fit effective FWHM
Flags and validation
EXTENDED Integer*2 Flag indicated that source is extended
CIRRUS_N Integer*2 Number of sources detected at 857 GHz within HFI TBC degrees
EXT_VAL Integer*2 Flag indicated external validation - see Note 2
ERCSC String Name of the ERCSC counterpart if any
ONLY 857 GHz Catalogue
APERFLUX_217 Real*4 mJy Source flux density at 217 GHz (best estimation) of the object detected at 857
APERFLUX_ERR_217 Real*4 mJy Uncertainty in source flux density
APERFLUX_353 Real*4 mJy Source flux density at 353 GHz (best estimation) of the object detected at 857
APERFLUX_ERR_353 Real*4 mJy Uncertainty in source flux density
APERFLUX_545 Real*4 mJy Source flux density at 545 GHz (best estimation) of the object detected at 857
APERFLUX_ERR_545 Real*4 mJy Uncertainty in source flux density

Note 1.- Source name designations consist of a prefix and a positional qualifier, the latter is in Galactic coordinates and specified as "Glll.ll±" where the (l,b) values are truncated. The prefix used in the single band portion of the PCCS is PLCK1 ddd PCCS catalogue at ddd GHz.

For example, a source detected at (l,b) = (120.237, 4.231) in the 545 GHz Planck map would be labelled PLCK545 G120.23±04.23.

Note 2.- The EXTENDED flag has the value of 0 if the source is compact and the value of 1 is it extended. The source size is determined by the geometric mean of the Gaussian fit FWHMs, with the criteria for extension being sqrt(GAU_FWHMMAJ * GAU_FWHMIN) > 1.5 times the beam FWHM.

Note 3.- The EXT_VAL flag has the value of 0, 1, or 2, based on the following conditions:

  • 2 – The source has a clear counterpart in one of the catalogues considered as ancillary data.
  • 1 – The source has NOT a clear counterpart in one of the catalogues considered as ancillary data but it has been detected by the internal multi-frequency method.
  • 0 – The source has NOT a clear counterpart in one of the catalogues considered as ancillary data and it has NOT been detected by the internal multi-frequency method.

Note 4.- The x axis is defined for each source as parallel to the constant colatitude line, with the same direction as the longitude. Therefore the position angles are measured anticlockwise from the x axis.

Below an example of the header.

XTENSION= 'BINTABLE'           /Written by IDL:  Tue Feb 26 17:50:21 2013
BITPIX  =                    8 /
NAXIS   =                    2 /Binary table
NAXIS1  =                  145 /Number of bytes per row
NAXIS2  =                 1256 /Number of rows
PCOUNT  =                    0 /Random parameter count
GCOUNT  =                    1 /Group count
TFIELDS =                   24 /Number of columns
DATE    = '2013-02-26'         /Creation date
INSTRUME= 'LFI     '           /Low Frequency Instrument
VERSION = '1.0     '           /Version of PCCS
ORIGIN  = 'LFI-DPC '           /Organisation responsible for data
TELESCOP= 'PLANCK  '           /Planck
CREATOR = 'Nov12-v03'          /Pipeline version
DATE-OBS= '2009-08-13'         /Start time of the survey
DATE-END= '2010-11-26'         /End time of the survey
EXTNAME = 'PCCS1_f030'         /Extension name
TFORM1  = '23A     '           /Character string
TTYPE1  = 'NAME    '           /Label for column 1
TUNIT1  = 'None    '           /Units of column 1
TFORM2  = '1D      '           /Real*8 (double precision)
TTYPE2  = 'GLON    '           /Label for column 2
TUNIT2  = 'degrees '           /Units of column 2
TFORM3  = '1D      '           /Real*8 (double precision)
TTYPE3  = 'GLAT    '           /Label for column 3
TUNIT3  = 'degrees '           /Units of column 3
TFORM4  = '1D      '           /Real*8 (double precision)
TTYPE4  = 'RA      '           /Label for column 4
TUNIT4  = 'degrees '           /Units of column 4
TFORM5  = '1D      '           /Real*8 (double precision)
TTYPE5  = 'DEC     '           /Label for column 5
TUNIT5  = 'degrees '           /Units of column 5
TFORM6  = '1E      '           /Real*4 (floating point)
TTYPE6  = 'DETFLUX '           /Label for column 6
TUNIT6  = 'mJy     '           /Units of column 6
TFORM7  = '1E      '           /Real*4 (floating point)
TTYPE7  = 'DETFLUX_ERR'        /Label for column 7
TUNIT7  = 'mJy     '           /Units of column 7
TFORM8  = '1E      '           /Real*4 (floating point)
TTYPE8  = 'APERFLUX'           /Label for column 8
TUNIT8  = 'mJy     '           /Units of column 8
TFORM9  = '1E      '           /Real*4 (floating point)
TTYPE9  = 'APERFLUX_ERR'       /Label for column 9
TUNIT9  = 'mJy     '           /Units of column 9
TFORM10 = '1E      '           /Real*4 (floating point)
TTYPE10 = 'PSFFLUX '           /Label for column 10
TUNIT10 = 'mJy     '           /Units of column 10
TFORM11 = '1E      '           /Real*4 (floating point)
TTYPE11 = 'PSFFLUX_ERR'        /Label for column 11
TUNIT11 = 'mJy     '           /Units of column 11
TFORM12 = '1E      '           /Real*4 (floating point)
TTYPE12 = 'GAUFLUX '           /Label for column 12
TUNIT12 = 'mJy     '           /Units of column 12
TFORM13 = '1E      '           /Real*4 (floating point)
TTYPE13 = 'GAUFLUX_ERR'        /Label for column 13
TUNIT13 = 'mJy     '           /Units of column 13
TFORM14 = '1E      '           /Real*4 (floating point)
TTYPE14 = 'GAU_SEMI1'          /Label for column 14
TUNIT14 = 'arcmin  '           /Units of column 14
TFORM15 = '1E      '           /Real*4 (floating point)
TTYPE15 = 'GAU_SEMI1_ERR'      /Label for column 15
TUNIT15 = 'arcmin  '           /Units of column 15
TFORM16 = '1E      '           /Real*4 (floating point)
TTYPE16 = 'GAU_SEMI2'          /Label for column 16
TUNIT16 = 'arcmin  '           /Units of column 16
TFORM17 = '1E      '           /Real*4 (floating point)
TTYPE17 = 'GAU_SEMI2_ERR'      /Label for column 17
TUNIT17 = 'arcmin  '           /Units of column 17
TFORM18 = '1E      '           /Real*4 (floating point)
TTYPE18 = 'GAU_THETA'          /Label for column 18
TUNIT18 = 'degrees '           /Units of column 18
TFORM19 = '1E      '           /Real*4 (floating point)
TTYPE19 = 'GAU_THETA_ERR'      /Label for column 19
TUNIT19 = 'degrees '           /Units of column 19
TFORM20 = '1E      '           /Real*4 (floating point)
TTYPE20 = 'GAU_FWHM_EFF'       /Label for column 20
TUNIT20 = 'arcmin  '           /Units of column 20
TFORM21 = '1I      '           /Integer*2 (short integer)
TTYPE21 = 'EXTENDED'           /Label for column 21
TUNIT21 = '0/1     '           /Units of column 21
TNULL21 =                   -1 /Null value for column 21
TFORM22 = '1I      '           /Integer*2 (short integer)
TTYPE22 = 'CIRRUS_N'           /Label for column 22
TUNIT22 = 'None    '           /Units of column 22
TNULL22 =                   -1 /Null value for column 22
TFORM23 = '1I      '           /Integer*2 (short integer)
TTYPE23 = 'EXT_VAL '           /Label for column 23
TUNIT23 = '0/1/2   '           /Units of column 23
TNULL23 =                   -1 /Null value for column 23
TFORM24 = '24A     '           /Character string
TTYPE24 = 'ERCSC   '           /Label for column 24
TUNIT24 = 'None    '           /Units of column 24

Early Release Compact Source Catalogue[edit]


Note to LM: move this to a separate page

The Bibliography[edit]

<biblio force=false>

  1. References


Early Release Compact Source Catalog


(Planck) High Frequency Instrument

(Planck) Low Frequency Instrument

Flexible Image Transfer Specification

Data Processing Center

To be confirmed