| Contains the parameters provided for each source in the FIRST Survey Catalog: 12Feb16 Version. |
| This table contains brief descriptions of the parameters provided for each source in the FIRST SC. It contains 946,464 sources arranged in order of decreasing declination. Required constraints:
|
| Name | Type | Length | Unit | Description | Default Value | Unified Content Descriptor |
|---|---|---|---|---|---|---|
| fieldName | varchar | 12 | Name of the coadded image containing the source (encodes the position of the field center). | obs.image | ||
| seqNo | int | 4 | sequential object number | meta.id | ||
| cx | float | 8 | unit vector of spherical co-ordinates | pos.distance;pos.cartesian.x | ||
| cy | float | 8 | unit vector of spherical co-ordinates | pos.distance;pos.cartesian.y | ||
| cz | float | 8 | unit vector of spherical co-ordinates | pos.distance;pos.cartesian.z | ||
| htmID | bigint | 8 | Hierarchical Triangular Mesh (HTM) index, 20 deep, for equatorial co-ordinates | pos.eq | ||
| ra | float | 8 | degrees | J2000 Celestial Right Ascension | pos.eq.ra;meta.main | |
| dec | float | 8 | degrees | J2000 Celestial Declination | pos.eq.dec;meta.main | |
| sourceProb | real | 4 | probability that the source is spurious (most commonly because it is a sidelobe of of a nearby bright source.) Low values mean the source is unlikely to be spurious. | meta.code | ||
| fPeak | real | 4 | mJy | peak flux densities | phot.flux.density;em.radio.750-1500MHz | |
| fInt | real | 4 | mJy | integrated flux densities | phot.flux.density;em.radio.750-1500MHz | |
| rms | real | 4 | mJy | local noise estimate at the source position | instr.det.noise | |
| maj | real | 4 | arcsec | major axes derived from the elliptical Gaussian model for the source after deconvolution. | phys.angSize.smajAxis | |
| min | real | 4 | arcsec | minor axes derived from the elliptical Gaussian model for the source after deconvolution. | phys.angSize.sminAxis | |
| pa | real | 4 | degrees | position angle (east of north) derived from the elliptical Gaussian model for the source | pos.posAng | |
| fMaj | real | 4 | arcsec | major axes derived from the elliptical Gaussian model for the source before deconvolution. | phys.angSize.smajAxis | |
| fMin | real | 4 | arcsec | minor axes derived from the elliptical Gaussian model for the source before deconvolution. | phys.angSize.sminAxis | |
| fPA | real | 4 | degrees | position angle (east of north) derived from the elliptical Gaussian model for the source before deconvolution. | pos.posAng | |
| sdssMatches | smallint | 2 | number of matches within a fiducial radius (8 arcsec) with SDSS DR6 | |||
| sdssSep | real | 4 | arcsec | separation of the nearest match in SDSS DR6 from the FIRST position | ||
| sdssMag | real | 4 | mag | SDSS i magnitude | ||
| sdssClass | varchar | 1 | morphological classification in SDSS DR6 (s=stellar, g=nonstellar/galaxy) | |||
| twomassMatches | smallint | 2 | number of matches within a fiducial radius (8 arcsec) with 2MASS | |||
| twomassSep | real | 4 | arcsec | separation of the nearest match in 2MASS from the FIRST position | ||
| twomassMag | real | 4 | mag | 2MASS K magnitude | ||
| Total length | 125 |