Difference between revisions of "Catalogues"
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|- | |- | ||
|APERFLUX_ERR_353 || Real*4 || mJy || Uncertainty in source flux density | |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_545 || Real*4 || mJy || Source flux density at 545 GHz (best estimation) of the object detected at 857 | ||
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'''Note 1.-''' Source name designations consist of a prefix and a positional qualifier, the latter | '''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 . | + | 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. | 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 | + | '''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 |
| − | 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. |
| − | 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 | '''Note 3.-''' The EXT_VAL flag has the value of 0, 1, or 2, based on the following | ||
conditions: | 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. | + | * 2 – The source has a clear counterpart in one of the catalogues considered as ancillary data. |
| − | 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. | + | * 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. | ||
Revision as of 13:06, 30 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 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.
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
