Catalogues
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 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-DPC – HFI-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 described below:
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.
SZ catalogues[edit]
Mark or Nabila to give brief description
AMo to add file structure
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
Sunyaev-Zel'dovich