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Glossary of VULCAN attributes

This Glossary alphabetically lists all attributes used in the VULCANv20260525 database(s) held in the ASNIR. If you would like to have more information about the schema tables please use the VULCANv20260525 Schema Browser (other Browser versions).
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

G

NameSchema TableDatabaseDescriptionTypeLengthUnitDefault ValueUnified Content Descriptor
g_rp gaia_source GAIADR3 G-RP colour real 4 mag   phot.colour
g_score twomass_xsc TWOMASS galaxy score: 1(extended) < g_score < 2(point-like). real 4     meta.code
gal_contam twomass_psc TWOMASS Extended source "contamination" flag. smallint 2     meta.code
gal_contam twomass_sixx2_psc TWOMASS src contaminated by galaxy (check blanked/subtracted tbl) smallint 2      
galaxy gaia_source GAIADR3 Flag indicating the availability of additional information in the galaxy table tinyint 1     meta.code.status
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  
gcnf twomass_sixx2_psc, twomass_sixx2_xsc TWOMASS Group confusion flag 0=not confused or single apparation, 1=confused smallint 2      
gcntr twomass_sixx2_psc, twomass_sixx2_xsc TWOMASS 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 TWOMASS Galactic latitude rounded to 0.001 deg. real 4 degrees   pos.galactic.lat
glat twomass_scn TWOMASS Galactic latitude of scan center, as computed from ra and dec above. real 4 degrees   pos.galactic.lat
glat twomass_sixx2_scn TWOMASS galactic latitude (decimal deg) of scan center float 8 deg    
glat twomass_xsc TWOMASS Galactic latitude (decimal deg) based on peak pixel. real 4 degrees   pos.galactic.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 TWOMASS Galactic longitude rounded to 0.001 deg. real 4 degrees   pos.galactic.lon
glon twomass_scn TWOMASS Galactic longitude of scan center, as computed from ra and dec above. real 4 degrees   pos.galactic.lon
glon twomass_sixx2_scn TWOMASS galactic longitude (decimal deg) of scan center float 8 deg    
glon twomass_xsc TWOMASS Galactic longitude (decimal deg) based on peak pixel. real 4 degrees   pos.galactic.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  
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  
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  
grvs_mag gaia_source GAIADR3 Integrated Grvs magnitude real 4 mag   phot.mag;em.opt
grvs_mag_error gaia_source GAIADR3 Grvs magnitude uncertainty real 4 mag   stat.error;phot.mag;em.opt
grvs_mag_nb_transits gaia_source GAIADR3 Number of transits used to compute Grvs smallint 2     meta.number
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  
gstackDetectID StackObjectAttributes, StackObjectThin PS1DR2 Unique stack detection identifier. bigint 8      
gstackImageID StackObjectAttributes, StackObjectThin PS1DR2 Unique stack identifier for g filter detection. bigint 8      
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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25/05/2026