Planck Early Release Compact Source Catalog

About ERCSC

The Planck Early Release Compact Source Catalog (ERCSC) is a list of high reliability sources, both Galactic and extragalactic. It is based on the Planck observations undertaken between 2009 August 13 and 2010 June 6, corresponding to Planck operational days 91–389. The ERCSC consists of 9 single-frequency source lists, one at each of the Planck frequencies. The source lists contain 35 columns per source at the LFI bands and 36 columns at the HFI bands. The 857 GHz source list has six additional columns which give the flux densities and flux density uncertainties at the three adjacent lower frequencies, 217, 353, and 545 GHz.

Planck ERCSC 857GHz Data Column Descriptions

Name Intype Units Description
NAME char Source name
FLUX double mJy Source flux density
FLUX_ERR double mJy Uncertainty (1 sigma) in source flux density
IRAS_100BG double MJy/sr Corresponding IRAS 100 μm background intensity
CMBSUBTRACT int Flag indicating detection of source in CMB subtracted maps
EXTENDED int 0/1 Flag indicating that source is extended
DATESOBS char UTC date UTC dates at which this source was observed
NUMOBS int Number of days this source observed
GLON double deg Galactic longitude
GLAT double deg Galactic latitude
POS_ERR double arcmin RMS of positional offsets for sources with this SNR
RA double deg Right ascension (J2000)
DEC double deg Declination (J2000)
BEAM_FWHMMAJ double arcmin Elliptical Gaussian beam FWHM along major axis
BEAM_FWHMMIN double arcmin Elliptical Gaussian beam FWHM along minor axis
BEAM_THETA double deg Orientation of beam major axis (measured East of Galactic North)
ELONGATION double Major to minor axis ratio
FLUXDET double mJy Flux density of source as determined by detection method
FLUXDET_ERR double mJy Uncertainty (1 sigma) in derived flux density from detection method
MX1 double arcmin First moment in X
MY1 double arcmin First moment in Y
MX2 double arcmin^2 Second moment in X
MXY double arcmin^2 Cross moment in X and Y
MY2 double arcmin^2 Second moment in Y
PSFFLUX double mJy Flux density of source from PSF fitting
PSFFLUX_ERR double mJy Uncertainty (1 sigma) in flux density from PSF fitting
GAUFLUX double mJy Flux density of source from 2-D Gaussian fitting
GAUFLUX_ERR double mJy Uncertainty (1 sigma) in flux density from 2-D Gaussian fitting
GAU_FWHMMAJ double arcmin Gaussian fit FWHM along major axis
GAU_FWHMMIN double arcmin Gaussian fit FWHM along minor axis
GAU_THETA double deg Orientation of Gaussian fit ellipse major axis
RELIABILITY double Estimated reliability
RELIABILITY_ERR double Uncertainty (1sigma) in reliability
MCQA_FLUX_ERR double Standard deviation of photometric error for sources with this SNR
MCQA_FLUX_BIAS double Median photometric error for sources with this SNR
BACKGROUND_RMS double mJy Background point source RMS
BANDFILL217 double mJy 217 GHz aperture photometry flux density at 857 GHz source position
BANDFILL217_ERR double mJy Uncertainty (1 sigma) in BANDFILL217
BANDFILL353 double mJy 353 GHz aperture photometry flux density at 857 GHz source position
BANDFILL353_ERR double mJy Uncertainty (1 sigma) in BANDFILL353
BANDFILL545 double mJy 545 GHz aperture photometry flux density at 857 GHz source position
BANDFILL545_ERR double mJy Uncertainty (1 sigma) in BANDFILL545
CIRRUS double Cirrus flag on 857 GHz source counts