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Glossary of WSA attributes

This Glossary alphabetically lists all attributes used in the UKIDSSDR11 database(s) held in the WSA. If you would like to have more information about the schema tables please use the UKIDSSDR11 Schema Browser (other Browser versions).
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G

NameSchema TableDatabaseDescriptionTypeLengthUnitDefault ValueUnified Content Descriptor
g_flux phot_variable_time_series_g_fov GAIADR1 G-band flux for each FoV observation float 8 electrons/second   phot.flux;em.opt
g_flux_error phot_variable_time_series_g_fov GAIADR1 Estimated uncertainty on G-band flux for each FoV observation float 8 electrons/second   stat.error;phot.flux;em.opt
g_mag_zero_oint_error ext_phot_zero_point GAIADR1 Uncertainty on G magnitude zero point float 8 mag   stat.error;phot.mag;arith.zp;em.opt
g_mag_zero_point ext_phot_zero_point GAIADR1 G magnitude zero point float 8 mag   phot.mag;arith.zp;em.opt
g_magnitude phot_variable_time_series_g_fov GAIADR1 G-band magnitude for each FoV observation float 8 mag   phot.mag;em.opt
g_rp gaia_source GAIADR2 G-RP colour real 4 mag   phot.colour
g_rp gaia_source GAIAEDR3 G-RP colour real 4 mag   phot.colour
g_score twomass_xsc 2MASS galaxy score: 1(extended) < g_score < 2(point-like). real 4     CODE_MISC
gaia_avg_cont gaiaxwise_matches GAIAXWISE Mean contaminating relative flux within PSFs when constructing h_offsets for Gaia sources at the local density, magnitude and intrinsic positional uncertainty of the primary source. float 8 dimensionless    
gaia_bp gaia_nonmatches, gaiaxwise_matches GAIAXWISE BP mean magnitude float 8 mag   phot.mag;em.op
gaia_cont_p1 gaiaxwise_matches GAIAXWISE Probability of Gaia source having contaminant of at least 1% relative flux given its separation from its corresponding WISE detection, as given by equation 12 of Wilson & Naylor (2018b, MNRAS, 481, 2148). float 8 dimensionless    
gaia_cont_p10 gaiaxwise_matches GAIAXWISE Probability of Gaia source having contaminant of at least 10% relative flux given its separation from its corresponding WISE detection. float 8 dimensionless    
gaia_dec gaia_nonmatches, gaiaxwise_matches GAIAXWISE Celestial Declination float 8 degrees   pos.eq.dec;meta.main
gaia_designation gaia_nonmatches, gaiaxwise_matches GAIAXWISE Unique source designation varchar 32 dimensionless   meta.id;meta.main
gaia_g gaia_nonmatches, gaiaxwise_matches GAIAXWISE G-band mean magnitude float 8 mag   phot.mag;em.op
gaia_p gaia_nonmatches GAIAXWISE match probability float 8 dimensionless    
gaia_ra gaia_nonmatches, gaiaxwise_matches GAIAXWISE Celestial Right Ascension float 8 degrees   pos.eq.ra;meta.main
gaia_rp gaia_nonmatches, gaiaxwise_matches GAIAXWISE RP mean magnitude float 8 mag   phot.mag;em.op
gaia_source_ID gaia_nonmatches, gaiaxwise_matches GAIAXWISE Gaia integer unique source designation bigint 8 dimensionless    
gain MultiframeDetector WSA Detector gain {image extension keyword: GAIN} real 4 electrons/ADU -0.9999995e9 ??
gain MultiframeDetector WSACalib Detector gain {image extension keyword: GAIN} real 4 electrons/ADU -0.9999995e9 ??
gain MultiframeDetector WSATransit Detector gain {image extension keyword: GAIN} real 4 electrons/ADU -0.9999995e9 ??
gain MultiframeDetector WSAUHS Detector gain {image extension keyword: GAIN} real 4 electrons/ADU -0.9999995e9 ??
gal_contam twomass_psc 2MASS Extended source "contamination" flag. smallint 2     CODE_MISC
gal_contam twomass_sixx2_psc 2MASS src contaminated by galaxy (check blanked/subtracted tbl) smallint 2      
galactic_lat igsl_source GAIADR1 Galactic latitude real 4 degrees   pos.galatic.lat
galactic_lon igsl_source GAIADR1 Galactic longitude real 4 degrees   pos.galatic.lon
gApFillFac StackObjectAttributes PS1DR2 Aperture fill factor from g filter stack detection. real 4   -999  
gApFlux StackObjectAttributes PS1DR2 Aperture flux from g filter stack detection. real 4 Janskys -999  
gApFluxErr StackObjectAttributes PS1DR2 Error in aperture flux from g filter stack detection. real 4 Janskys -999  
gApMag StackObjectThin PS1DR2 Aperture magnitude from g filter stack detection. real 4 AB magnitudes -999  
gApMagErr StackObjectThin PS1DR2 Error in aperture magnitude from g filter stack detection. real 4 AB magnitudes -999  
gApRadius StackObjectAttributes PS1DR2 Aperture radius for g filter stack detection. real 4 arcsec -999  
gauSig UKIDSSDetection WSA RMS of axes of ellipse fit real 4 pixels   MORPH_PARAM
gauSig calDetection WSACalib RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels   MORPH_PARAM
These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σa²+σb²)½
gauSig dxsDetection, gcsDetection, gpsDetection, lasDetection WSA RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels   MORPH_PARAM
These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σa²+σb²)½
gauSig lasMapRemeasAver WSA Averaged RMS of axes of ellipse fit real 4 pixels   src.morph.param
gauSig lasMapRemeasurement WSA RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels   src.morph.param
Derived from the maximum and minimum spatial RMS of the object profile along any direction, ie. 0.5*(A_IMAGE² + B_IMAGE²)½
gauSig ptsDetection WSATransit RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels   MORPH_PARAM
These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σa²+σb²)½
gauSig udsDetection WSA RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels   MORPH_PARAM
Derived from the maximum and minimum spatial RMS of the object profile along any direction, ie. 0.5*(A_IMAGE² + B_IMAGE²)½
gauSig uhsDetection, uhsDetectionAll WSAUHS RMS of axes of ellipse fit {catalogue TType keyword: Gaussian_sigma} real 4 pixels   MORPH_PARAM
These are derived from the three general intensity-weighted second moments. The equivalence between them and a generalised elliptical Gaussian Distribution is used to derive Gaussian sigma = (σa²+σb²)½
gcnf twomass_sixx2_psc, twomass_sixx2_xsc 2MASS Group confusion flag 0=not confused or single apparation, 1=confused smallint 2      
gcntr twomass_sixx2_psc, twomass_sixx2_xsc 2MASS A unique identifier for the merged group of apparitions of this source int 4      
gdec StackObjectThin PS1DR2 Declination from g filter stack detection. float 8 degrees -999  
gdecErr StackObjectThin PS1DR2 Declination error from g filter stack detection. real 4 arcsec -999  
gEpoch StackObjectThin PS1DR2 Modified Julian Date of the mean epoch of images contributing to the the g-band stack (equinox J2000). float 8 days -999  
gexpTime StackObjectAttributes PS1DR2 Exposure time of the g filter stack. Necessary for converting listed fluxes and magnitudes back to measured ADU counts. real 4 seconds -999  
gExtNSigma StackObjectAttributes PS1DR2 An extendedness measure for the g filter stack detection based on the deviation between PSF and Kron (1980) magnitudes, normalized by the PSF magnitude uncertainty. real 4   -999  
gFlags MeanObject PS1DR2 Information flag bitmask for mean object from g filter detections. Values listed in ObjectFilterFlags. int 4   0  
ginfoFlag StackObjectThin PS1DR2 Information flag bitmask indicating details of the g filter stack photometry. Values listed in DetectionFlags. bigint 8   0  
ginfoFlag2 StackObjectThin PS1DR2 Information flag bitmask indicating details of the g filter stack photometry. Values listed in DetectionFlags2. int 4   0  
ginfoFlag3 StackObjectThin PS1DR2 Information flag bitmask indicating details of the g filter stack photometry. Values listed in DetectionFlags3. int 4   0  
gippDetectID StackObjectAttributes, StackObjectThin PS1DR2 IPP internal detection identifier. bigint 8      
gKronFlux StackObjectAttributes PS1DR2 Kron (1980) flux from g filter stack detection. real 4 Janskys -999  
gKronFluxErr StackObjectAttributes PS1DR2 Error in Kron (1980) flux from g filter stack detection. real 4 Janskys -999  
gKronMag StackObjectThin PS1DR2 Kron (1980) magnitude from g filter stack detection. real 4 AB magnitudes -999  
gKronMagErr StackObjectThin PS1DR2 Error in Kron (1980) magnitude from g filter stack detection. real 4 AB magnitudes -999  
gKronRad StackObjectAttributes PS1DR2 Kron (1980) radius from g filter stack detection. real 4 arcsec -999  
glat allwise_sc WISE Galactic latitude computed from the non-moving source fit equatorial position. CAUTION: This coordinate should not be used as an astrometric reference. float 8 deg    
glat catwise_2020, catwise_prelim WISE galactic latitude float 8 deg    
glat twomass_psc 2MASS Galactic latitude rounded to 0.001 deg. real 4 degrees   POS_GAL_LAT
glat twomass_scn 2MASS Galactic latitude of scan center, as computed from ra and dec above. real 4 degrees   POS_GAL_LAT
glat twomass_sixx2_scn 2MASS galactic latitude (decimal deg) of scan center float 8 deg    
glat twomass_xsc 2MASS Galactic latitude (decimal deg) based on peak pixel. real 4 degrees   POS_GAL_LAT
glat wise_allskysc WISE Galactic latitude. CAUTION: This coordinate should not be used as an astrometric reference. float 8 degrees    
glat wise_prelimsc WISE Galactic latitude. CAUTION: This coordinate should not be used as an astrometric reference float 8 degrees    
glon allwise_sc WISE Galactic longitude, computed from the non-moving source fit equatorial position. CAUTION: This coordinate should not be used as an astrometric reference. float 8 deg    
glon catwise_2020, catwise_prelim WISE galactic longitude float 8 deg    
glon twomass_psc 2MASS Galactic longitude rounded to 0.001 deg. real 4 degrees   POS_GAL_LON
glon twomass_scn 2MASS Galactic longitude of scan center, as computed from ra and dec above. real 4 degrees   POS_GAL_LON
glon twomass_sixx2_scn 2MASS galactic longitude (decimal deg) of scan center float 8 deg    
glon twomass_xsc 2MASS Galactic longitude (decimal deg) based on peak pixel. real 4 degrees   POS_GAL_LON
glon wise_allskysc WISE Galactic longitude. CAUTION: This coordinate should not be used as an astrometric reference. float 8 degrees    
glon wise_prelimsc WISE Galactic longitude. CAUTION: This coordinate should not be used as an astrometric reference float 8 degrees    
gMeanApMag MeanObject PS1DR2 Mean aperture magnitude from g filter detections. real 4 AB magnitudes -999  
gMeanApMagErr MeanObject PS1DR2 Error in mean aperture magnitude from g filter detections. real 4 AB magnitudes -999  
gMeanApMagNpt MeanObject PS1DR2 Number of measurements included in mean aperture magnitude from g filter detections. smallint 2   -999  
gMeanApMagStd MeanObject PS1DR2 Standard deviation of aperture magnitudes from g filter detections. real 4 AB magnitudes -999  
gMeanKronMag MeanObject PS1DR2 Mean Kron (1980) magnitude from g filter detections. real 4 AB magnitudes -999  
gMeanKronMagErr MeanObject PS1DR2 Error in mean Kron (1980) magnitude from g filter detections. real 4 AB magnitudes -999  
gMeanKronMagNpt MeanObject PS1DR2 Number of measurements included in mean Kron (1980) magnitude from g filter detections. smallint 2   -999  
gMeanKronMagStd MeanObject PS1DR2 Standard deviation of Kron (1980) magnitudes from g filter detections. real 4 AB magnitudes -999  
gMeanPSFMag MeanObject PS1DR2 Mean PSF magnitude from g filter detections. real 4 AB magnitudes -999  
gMeanPSFMagErr MeanObject PS1DR2 Error in mean PSF magnitude from g filter detections. real 4 AB magnitudes -999  
gMeanPSFMagMax MeanObject PS1DR2 Maximum PSF magnitude from g filter detections. real 4 AB magnitudes -999  
gMeanPSFMagMin MeanObject PS1DR2 Minimum PSF magnitude from g filter detections. real 4 AB magnitudes -999  
gMeanPSFMagNpt MeanObject PS1DR2 Number of measurements included in mean PSF magnitude from g filter detections. smallint 2   -999  
gMeanPSFMagStd MeanObject PS1DR2 Standard deviation of PSF magnitudes from g filter detections. real 4 AB magnitudes -999  
gmomentR1 StackObjectAttributes PS1DR2 First radial moment for g filter stack detection. real 4 arcsec -999  
gmomentRH StackObjectAttributes PS1DR2 Half radial moment (r^0.5 weighting) for g filter stack detection. real 4 arcsec^0.5 -999  
gmomentXX StackObjectAttributes PS1DR2 Second moment M_xx for g filter stack detection. real 4 arcsec^2 -999  
gmomentXY StackObjectAttributes PS1DR2 Second moment M_xy for g filter stack detection. real 4 arcsec^2 -999  
gmomentYY StackObjectAttributes PS1DR2 Second moment M_yy for g filter stack detection. real 4 arcsec^2 -999  
gnFrames StackObjectThin PS1DR2 Number of input frames/exposures contributing to the g filter stack detection. int 4   -999  
gPlateScale StackObjectAttributes PS1DR2 Local plate scale for the g filter stack. real 4 arcsec/pixel 0  
gpsEnd Multiframe WSA Date and time (UTC) of end of the observation from GPS data {image primary HDU keyword: GPS-END} datetime 8   12-31-9999 time.epoch
gpsEnd Multiframe WSACalib Date and time (UTC) of end of the observation from GPS data {image primary HDU keyword: GPS-END} datetime 8   12-31-9999 time.epoch
gpsEnd Multiframe WSATransit Date and time (UTC) of end of the observation from GPS data {image primary HDU keyword: GPS-END} datetime 8   12-31-9999 time.epoch
gpsEnd Multiframe WSAUHS Date and time (UTC) of end of the observation from GPS data {image primary HDU keyword: GPS-END} datetime 8   12-31-9999 time.epoch
gpsfChiSq StackObjectAttributes PS1DR2 Reduced chi squared value of the PSF model fit for g filter stack detection. real 4   -999  
gpsfCore StackObjectAttributes PS1DR2 PSF core parameter k from g filter stack detection, where F = F0 / (1 + k r^2 + r^3.33). real 4   -999  
gPSFFlux StackObjectAttributes PS1DR2 PSF flux from g filter stack detection. real 4 Janskys -999  
gPSFFluxErr StackObjectAttributes PS1DR2 Error in PSF flux from g filter stack detection. real 4 Janskys -999  
gpsfLikelihood StackObjectAttributes PS1DR2 Likelihood that this g filter stack detection is best fit by a PSF. real 4   -999  
gPSFMag StackObjectThin PS1DR2 PSF magnitude from g filter stack detection. real 4 AB magnitudes -999  
gPSFMagErr StackObjectThin PS1DR2 Error in PSF magnitude from g filter stack detection. real 4 AB magnitudes -999  
gpsfMajorFWHM StackObjectAttributes PS1DR2 PSF major axis FWHM from g filter stack detection. real 4 arcsec -999  
gpsfMinorFWHM StackObjectAttributes PS1DR2 PSF minor axis FWHM from g filter stack detection. real 4 arcsec -999  
gpsfQf StackObjectAttributes PS1DR2 PSF coverage factor for g filter stack detection. real 4   -999  
gpsfQfPerfect StackObjectAttributes PS1DR2 PSF-weighted fraction of pixels totally unmasked for g filter stack detection. real 4   -999  
gpsfTheta StackObjectAttributes PS1DR2 PSF major axis orientation from g filter stack detection. real 4 degrees -999  
gpsObs Multiframe WSA Date and time (UTC) of start of the observation from GPS data {image primary HDU keyword: GPS-OBS} datetime 8   12-31-9999 time.epoch
gpsObs Multiframe WSACalib Date and time (UTC) of start of the observation from GPS data {image primary HDU keyword: GPS-OBS} datetime 8   12-31-9999 time.epoch
gpsObs Multiframe WSATransit Date and time (UTC) of start of the observation from GPS data {image primary HDU keyword: GPS-OBS} datetime 8   12-31-9999 time.epoch
gpsObs Multiframe WSAUHS Date and time (UTC) of start of the observation from GPS data {image primary HDU keyword: GPS-OBS} datetime 8   12-31-9999 time.epoch
gQfPerfect MeanObject PS1DR2 Maximum PSF weighted fraction of pixels totally unmasked from g filter detections. real 4   -999  
gra StackObjectThin PS1DR2 Right ascension from g filter stack detection. float 8 degrees -999  
graErr StackObjectThin PS1DR2 Right ascension error from g filter stack detection. real 4 arcsec -999  
grpMem Multiframe WSA Group membership (0=F, 1=T) {image primary HDU keyword: GRPMEM} tinyint 1   0 CODE_MEM
grpMem Multiframe WSACalib Group membership (0=F, 1=T) {image primary HDU keyword: GRPMEM} tinyint 1   0 CODE_MEM
grpMem Multiframe WSATransit Group membership (0=F, 1=T) {image primary HDU keyword: GRPMEM} tinyint 1   0 CODE_MEM
grpMem Multiframe WSAUHS Group membership (0=F, 1=T) {image primary HDU keyword: GRPMEM} tinyint 1   0 CODE_MEM
grpNum Multiframe WSA Group number applied to all members {image primary HDU keyword: GRPNUM} int 4   -99999999 meta.number
grpNum Multiframe WSACalib Group number applied to all members {image primary HDU keyword: GRPNUM} int 4   -99999999 meta.number
grpNum Multiframe WSATransit Group number applied to all members {image primary HDU keyword: GRPNUM} int 4   -99999999 meta.number
grpNum Multiframe WSAUHS Group number applied to all members {image primary HDU keyword: GRPNUM} int 4   -99999999 meta.number
gsc2Class first08Jul16Source FIRST morphological classification in GSC-2 version 2.3.2 (s=stellar, g=nonstellar/galaxy) varchar 1      
gsc2Mag first08Jul16Source FIRST GSC2 F magnitude real 4 mag    
gsc2Matches first08Jul16Source FIRST number of matches within a fiducial radius (10 arcsec) with GSC-2 version 2.3.2 int 4      
gsc2Sep first08Jul16Source FIRST separation of the nearest match in GSC-2 version 2.3.2 from the FIRST position real 4 arcsec    
gsDec Multiframe WSA Declination of guide star {image primary HDU keyword: GSDEC} float 8 degrees -0.9999995e9 pos.eq.dec;meta.main
gsDec Multiframe WSACalib Declination of guide star {image primary HDU keyword: GSDEC} float 8 degrees -0.9999995e9 pos.eq.dec;meta.main
gsDec Multiframe WSATransit Declination of guide star {image primary HDU keyword: GSDEC} float 8 degrees -0.9999995e9 pos.eq.dec;meta.main
gsDec Multiframe WSAUHS Declination of guide star {image primary HDU keyword: GSDEC} float 8 degrees -0.9999995e9 pos.eq.dec;meta.main
gsky StackObjectAttributes PS1DR2 Residual background sky level at the g filter stack detection. real 4 Janskys/arcsec^2 -999  
gskyErr StackObjectAttributes PS1DR2 Error in residual background sky level at the g filter stack detection. real 4 Janskys/arcsec^2 -999  
gsRa Multiframe WSA Right ascension of guide star {image primary HDU keyword: GSRA} float 8 hours -0.9999995e9 pos.eq.ra;meta.main
gsRa Multiframe WSACalib Right ascension of guide star {image primary HDU keyword: GSRA} float 8 hours -0.9999995e9 pos.eq.ra;meta.main
gsRa Multiframe WSATransit Right ascension of guide star {image primary HDU keyword: GSRA} float 8 hours -0.9999995e9 pos.eq.ra;meta.main
gsRa Multiframe WSAUHS Right ascension of guide star {image primary HDU keyword: GSRA} float 8 hours -0.9999995e9 pos.eq.ra;meta.main
gstackDetectID StackObjectAttributes, StackObjectThin PS1DR2 Unique stack detection identifier. bigint 8      
gstackImageID StackObjectAttributes, StackObjectThin PS1DR2 Unique stack identifier for g filter detection. bigint 8      
guiding Multiframe WSA Guider status (OFF|ON|PAUSED) {image primary HDU keyword: GUIDING} varchar 10   NONE  
guiding Multiframe WSACalib Guider status (OFF|ON|PAUSED) {image primary HDU keyword: GUIDING} varchar 10   NONE  
guiding Multiframe WSATransit Guider status (OFF|ON|PAUSED) {image primary HDU keyword: GUIDING} varchar 10   NONE  
guiding Multiframe WSAUHS Guider status (OFF|ON|PAUSED) {image primary HDU keyword: GUIDING} varchar 10   NONE  
gxPos StackObjectAttributes PS1DR2 PSF x center location from g filter stack detection. real 4 sky pixels -999  
gxPosErr StackObjectAttributes PS1DR2 Error in PSF x center location from g filter stack detection. real 4 sky pixels -999  
gyPos StackObjectAttributes PS1DR2 PSF y center location from g filter stack detection. real 4 sky pixels -999  
gyPosErr StackObjectAttributes PS1DR2 Error in PSF y center location from g filter stack detection. real 4 sky pixels -999  
gzp StackObjectAttributes PS1DR2 Photometric zeropoint for the g filter stack. Necessary for converting listed fluxes and magnitudes back to measured ADU counts. real 4 magnitudes 0  



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17/01/2022