TABLE  firstSource

Contains the parameters provided for each source in the FIRST Survey Catalog: 03Apr11 Version.

This table contains brief descriptions of the parameters provided for
each source in the FIRST SC. It contains 811,117 sources arranged in
order of increasing right ascension.

Required constraints:
  • Primary key is (seqNo)

NameTypeLengthUnitDescriptionDefault ValueUnified Content Descriptor
fieldNamevarchar12 Name of the coadded image containing the source (encodes the position of the field center). ID_IMAGE
seqNoint4 sequential object number ID_NUMBER
cxfloat8 unit vector of spherical co-ordinates POS_EQ_X
cyfloat8 unit vector of spherical co-ordinates POS_EQ_Y
czfloat8 unit vector of spherical co-ordinates POS_EQ_Z
htmIDbigint8 Hierarchical Triangular Mesh (HTM) index, 20 deep, for equatorial co-ordinates POS_GENERAL
rafloat8degreesJ2000 Celestial Right Ascension POS_EQ_RA_MAIN
decfloat8degreesJ2000 Celestial Declination POS_EQ_DEC_MAIN
warnFlagvarchar1 Warning flag indicating that the source may be a sidelobe of a nearby bright source. CODE_MISC
fPeakreal4mJypeak flux densities PHOT_FLUX_RADIO_1.4G
fIntreal4mJyintegrated flux densities PHOT_FLUX_RADIO_1.4G
rmsreal4mJylocal noise estimate at the source position INST_NOISE
majreal4arcsecmajor axes derived from the elliptical Gaussian model for the source after deconvolution. EXTENSION_FWHM_MAJ
minreal4arcsecminor axes derived from the elliptical Gaussian model for the source after deconvolution. EXTENSION_FWHM_MIN
pareal4degreesposition angle (east of north) derived from the elliptical Gaussian model for the source POS_POS-ANG
fMajreal4arcsecmajor axes derived from the elliptical Gaussian model for the source before deconvolution. EXTENSION_FWHM_MAJ
fMinreal4arcsecminor axes derived from the elliptical Gaussian model for the source before deconvolution. EXTENSION_FWHM_MIN
fPAreal4degreesposition angle (east of north) derived from the elliptical Gaussian model for the source before deconvolution. POS_POS-ANG
Total length101