Difference between revisions of "Catalogues"

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==Planck Catalogue of Compact Sources==
 
==Planck Catalogue of Compact Sources==
 
The PCCS source list in each frequency is structured as a FITS binary table having one row for each detected source.  
 
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:
+
 
 +
The FITS primary header will have the following structure:
  
 
{| border="1" cellpadding="2"
 
{| border="1" cellpadding="2"
|- valign="top"
+
|+ FITS primary header
|width="30%"|'''FITS Keyword'''
+
|-
|width="20%"|'''Data Type'''
+
| '''FITS Keyword''' || '''Data Type''' || '''Units''' || '''Description'''
|width="10%"|'''Units'''
+
|-  
|width="40%"|'''Description'''
+
|INSTRUME || String || || LFI or HFI
|- style="vertical-align:top;"
+
|-  
|INSTRUME  
+
| VERSION || String || || Version of PCCS
| String  
+
|-  
|
+
| DATE || String || || Date file created:yyyy-mm-dd  
| LFI or HFI
+
|-  
|- style="vertical-align:top;"
+
| ORIGIN || String || || Name of organization responsible for the data (LFI-DPC – HFI-DPC)  
| VERSION  
+
|-  
| String  
+
| TELESCOP || String || || PLANCK  
|  
+
|-  
| Version of PCCS
+
| CREATOR || String || || Pipeline Version  
|- style="vertical-align:top;"
+
|-  
| DATE  
+
| DATE-OBS || String || days || Start-up time of the survey: yyyy-mm-dd  
| String  
+
|-  
|
+
| DATE-END || String || days || Ending time of the survey: yyyy-mm-dd
| Date file created:yyyy-mm-dd  
 
|- style="vertical-align:top;"
 
| ORIGIN  
 
| String  
 
|  
 
| Name of organization responsible for the data (LFI-DPC – HFI-DPC)  
 
|- style="vertical-align:top;"
 
| TELESCOP  
 
| String  
 
|  
 
| PLANCK  
 
|- style="vertical-align:top;"
 
| CREATOR  
 
| String  
 
|
 
| Pipeline Version  
 
|- style="vertical-align:top;"
 
| DATE-OBS  
 
| String  
 
| days  
 
| Start-up time of the survey: yyyy-mm-dd  
 
|- style="vertical-align:top;"
 
| DATE-END  
 
| String  
 
| days  
 
| Ending time of the survey: yyyy-mm-dd
 
 
|}
 
|}
  

Revision as of 19:36, 29 November 2012

Planck Catalogue of Compact Sources[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
INSTRUME String LFI or HFI
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)
TELESCOP String PLANCK
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 below described:

Column Name Data Type Units Description Identification 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) Photometry 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 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*4

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±bb.bb" where the (l,b) values are truncated. The prefix used in the single band portion of the PCCS is PLCKddd 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.

Flexible Image Transfer Specification

(Planck) Low Frequency Instrument

(Planck) High Frequency Instrument

Data Processing Center

Full-Width-at-Half-Maximum

To be confirmed

Early Release Compact Source Catalog