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Glossary of WSA NonSurvey attributes (UKIDSSDR10)

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

NameSchema TableDatabaseDescriptionTypeLengthUnitDefault ValueUnified Content Descriptor
abMagLim [nspid]MultiframeDetector WSA NonSurvey 5-sigma limiting AB magnitude for point sources {catalogue extension keyword:  ABMAGLIM} real 4 mag -0.9999995e9  
aBr [nspid]Source WSA NonSurvey The galactic extinction correction in the Br band for extragalactic objects real 4 mag -0.9999995e9  
abSatMag [nspid]MultiframeDetector WSA NonSurvey Saturation limit for point sources (AB magnitude) {catalogue extension keyword:  ABMAGSAT} real 4 mag -0.9999995e9  
adjacentFrameTolerance [nspid]Programme WSA NonSurvey The match tolerance for adjacent frames in the survey real 4 Degrees   ??
aebv [nspid]Filter WSA NonSurvey The constant to multiply the Schlegel map E(B-V) by to get the total galactic extinction. real 4   -0.9999995e9  
agentId [nspid]Multiframe WSA NonSurvey Externally assigned unique identifier for remote agent (if any) {image primary HDU keyword: AGENTID} varchar 64   NONE ??
aH [nspid]Source WSA NonSurvey The galactic extinction correction in the H band for extragalactic objects real 4 mag -0.9999995e9  
aH2 [nspid]Source WSA NonSurvey The galactic extinction correction in the H2 band for extragalactic objects real 4 mag -0.9999995e9  
airTemp [nspid]Multiframe WSA NonSurvey Air temperature {image primary HDU keyword: AIRTEMP} real 4 degrees_Celsius -0.9999995e9 phys.temperature
aJ [nspid]Source WSA NonSurvey The galactic extinction correction in the J band for extragalactic objects real 4 mag -0.9999995e9  
aK [nspid]Source WSA NonSurvey The galactic extinction correction in the K band for extragalactic objects real 4 mag -0.9999995e9  
ambiPressure [nspid]Multiframe WSA NonSurvey Ambient pressure {image primary HDU keyword: BARPRESS} real 4   -0.9999995e9 phys.pressure
amEnd [nspid]Multiframe WSA NonSurvey Airmass at end of observation {image primary HDU keyword: AMEND} real 4   -0.9999995e9 obs.airMass
amStart [nspid]Multiframe WSA NonSurvey Airmass at start of observation {image primary HDU keyword: AMSTART} real 4   -0.9999995e9 obs.airMass
aNbh [nspid]Source WSA NonSurvey The galactic extinction correction in the Nbh band for extragalactic objects real 4 mag -0.9999995e9  
aperCor1 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 1⁄2 × core flux {catalogue extension keyword:  APCOR1}
corrected photometry = 2.5×log10(flux) + aperCor + skyCorr
real 4   -0.9999995e9 ??
Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.
aperCor2 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 1⁄√2 core flux {catalogue extension keyword:  APCOR2}
corrected photometry = 2.5×log10(flux) + aperCor + skyCorr
real 4   -0.9999995e9 ??
Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.
aperCor3 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: core flux {catalogue extension keyword:  APCOR3}
corrected photometry = 2.5×log10(flux) + aperCor + skyCorr
real 4   -0.9999995e9 ??
Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.
aperCor4 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: √2 × core flux {catalogue extension keyword:  APCOR4}
corrected photometry = 2.5×log10(flux) + aperCor + skyCorr
real 4   -0.9999995e9 ??
Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.
aperCor5 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 2 × core flux {catalogue extension keyword:  APCOR5}
corrected photometry = 2.5×log10(flux) + aperCor + skyCorr
real 4   -0.9999995e9 ??
Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.
aperCor6 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 2√2 × core flux {catalogue extension keyword:  APCOR6}
corrected photometry = 2.5×log10(flux) + aperCor + skyCorr
real 4   -0.9999995e9 ??
Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.
aperCor7 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 4 × core flux {catalogue extension keyword:  APCOR7}
corrected photometry = 2.5×log10(flux) + aperCor + skyCorr
real 4   -0.9999995e9 ??
Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.
aperCorPeak [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: peak height {catalogue extension keyword:  APCORPK}
corrected photometry = 2.5×log10(flux) + aperCor + skyCorr
real 4   -0.9999995e9 ??
Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.
aperFlux1 [nspid]Detection WSA NonSurvey Default aperture flux counts 1 {catalogue TType keyword: Aper_flux_1}
1/2 × rcore
real 4 ADU   PHOT_INTENSITY_ADU
These are a series of different radii soft-edged apertures designed to adequately sample the curve-of-growth of the majority of images and to provide fixed-sized aperture fluxes for all images. The scale size for these apertures is selected by defining a scale radius ≈<FWHM> for site+instrument. In the case of WFCAM this "core" radius (rcore) has been fixed at 1.0 arcsec for convenience in inter-comparison with other datasets. A 1.0 arcsec radius is equivalent to 2.5 pixels for non-interleaved data, 5.0 pixels for 2×2 interleaved data, and 7.5 pixels for 3×3 interleaved data. In ≈1 arcsec seeing an rcore-radius aperture contains roughly 2/3 of the total flux of stellar images. [In general the rcore parameter is user specifiable and hence is recorded in the output catalogue FITS header.]
The aperture fluxes are sky-corrected integrals (summations) with a soft-edge (ie. pro-rata flux division for boundary pixels). However, for overlapping images they are more subtle than this since they are in practice simultaneously fitted top-hat functions, to minimise the effects of crowding. Images external to the blend are also flagged and not included in the large radius summations.
Extras for generalised galaxy photometry further spaced in radius to ensure reasonable sampling further out.
Note these are all corrected for pixels from overlapping neighbouring images. The aperture fluxes can be combined with later-derived aperture corrections for general purpose photometry and together with pHeight (the peak flux) give a simple curve-of-growth measurement which forms the basis of the morphological classification scheme.
aperFlux10 [nspid]Detection WSA NonSurvey default aperture flux 10 {catalogue TType keyword: Aper_flux_10}
7 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux10err [nspid]Detection WSA NonSurvey Error in aperture flux 10 {catalogue TType keyword: Aper_flux_10_err} real 4 ADU   ERROR
aperFlux11 [nspid]Detection WSA NonSurvey default aperture flux 11 {catalogue TType keyword: Aper_flux_11}
8 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux11err [nspid]Detection WSA NonSurvey Error in aperture flux 11 {catalogue TType keyword: Aper_flux_11_err} real 4 ADU   ERROR
aperFlux12 [nspid]Detection WSA NonSurvey default aperture flux 12 {catalogue TType keyword: Aper_flux_12}
10 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux12err [nspid]Detection WSA NonSurvey Error in aperture flux 12 {catalogue TType keyword: Aper_flux_12_err} real 4 ADU   ERROR
aperFlux13 [nspid]Detection WSA NonSurvey default aperture flux 13 {catalogue TType keyword: Aper_flux_13}
12 × rcore ie. ≈24 arcsec diameter. (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux13err [nspid]Detection WSA NonSurvey Error in aperture flux 13 {catalogue TType keyword: Aper_flux_13_err} real 4 ADU   ERROR
aperFlux1err [nspid]Detection WSA NonSurvey Error in aperture flux counts 1 {catalogue TType keyword: Aper_flux_1_err} real 4 ADU   ERROR
aperFlux2 [nspid]Detection WSA NonSurvey Default aperture flux 2 {catalogue TType keyword: Aper_flux_2}
1/√2 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux2err [nspid]Detection WSA NonSurvey Error in aperture flux 2 {catalogue TType keyword: Aper_flux_2_err} real 4 ADU   ERROR
aperFlux3 [nspid]Detection WSA NonSurvey default aperture flux 3 {catalogue TType keyword: Aper_flux_3}
rcore; recommended if a single number is required to represent the flux for ALL images. (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux3err [nspid]Detection WSA NonSurvey Error in aperture flux 3 {catalogue TType keyword: Aper_flux_3_err} real 4 ADU   ERROR
aperFlux4 [nspid]Detection WSA NonSurvey default aperture flux 4 {catalogue TType keyword: Aper_flux_4}
√2 × rcore; ensures ∼99% of PSF flux. (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux4err [nspid]Detection WSA NonSurvey Error in aperture flux 4 {catalogue TType keyword: Aper_flux_4_err} real 4 ADU   ERROR
aperFlux5 [nspid]Detection WSA NonSurvey default aperture flux 5 {catalogue TType keyword: Aper_flux_5}
2 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux5err [nspid]Detection WSA NonSurvey Error in aperture flux 5 {catalogue TType keyword: Aper_flux_5_err} real 4 ADU   ERROR
aperFlux6 [nspid]Detection WSA NonSurvey default aperture flux 6 {catalogue TType keyword: Aper_flux_6}
2√2 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux6err [nspid]Detection WSA NonSurvey Error in aperture flux 6 {catalogue TType keyword: Aper_flux_6_err} real 4 ADU   ERROR
aperFlux7 [nspid]Detection WSA NonSurvey default aperture flux 7 {catalogue TType keyword: Aper_flux_7}
4 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux7err [nspid]Detection WSA NonSurvey Error in aperture flux 7 {catalogue TType keyword: Aper_flux_7_err} real 4 ADU   ERROR
aperFlux8 [nspid]Detection WSA NonSurvey default aperture flux 8 {catalogue TType keyword: Aper_flux_8}
5 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux8err [nspid]Detection WSA NonSurvey Error in aperture flux 8 {catalogue TType keyword: Aper_flux_8_err} real 4 ADU   ERROR
aperFlux9 [nspid]Detection WSA NonSurvey default aperture flux 9 {catalogue TType keyword: Aper_flux_9}
6 × rcore (see glossary entry for aperFlux1)
real 4 ADU   PHOT_INTENSITY_ADU
aperFlux9err [nspid]Detection WSA NonSurvey Error in aperture flux 9 {catalogue TType keyword: Aper_flux_9_err} real 4 ADU   ERROR
aperMag1 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 1 real 4 mag   PHOT_INT-MAG
aperMag10 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 10 real 4 mag   PHOT_INT-MAG
aperMag10err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 10 real 4 mag   ERROR
aperMag11 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 11 real 4 mag   PHOT_INT-MAG
aperMag11err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 11 real 4 mag   ERROR
aperMag12 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 12 real 4 mag   PHOT_INT-MAG
aperMag12err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 12 real 4 mag   ERROR
aperMag13 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 13 real 4 mag   PHOT_INT-MAG
aperMag13err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 13 real 4 mag   ERROR
aperMag1err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 1 real 4 mag   ERROR
aperMag2 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 2 real 4 mag   PHOT_INT-MAG
aperMag2err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 2 real 4 mag   ERROR
aperMag3 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 3 real 4 mag   PHOT_INT-MAG
aperMag3 [nspid]Orphan WSA NonSurvey Calibrated and corrected aperture magnitude 3 real 4 mag -0.9999995e9 PHOT_INT-MAG
aperMag3err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 3 real 4 mag   ERROR
aperMag4 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 4 real 4 mag   PHOT_INT-MAG
aperMag4err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 4 real 4 mag   ERROR
aperMag5 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 5 real 4 mag   PHOT_INT-MAG
aperMag5err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 5 real 4 mag   ERROR
aperMag6 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 6 real 4 mag   PHOT_INT-MAG
aperMag6err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 6 real 4 mag   ERROR
aperMag7 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 7 real 4 mag   PHOT_INT-MAG
aperMag7err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 7 real 4 mag   ERROR
aperMag8 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 8 real 4 mag   PHOT_INT-MAG
aperMag8err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 8 real 4 mag   ERROR
aperMag9 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 9 real 4 mag   PHOT_INT-MAG
aperMag9err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 9 real 4 mag   ERROR
apertureX [nspid]Multiframe WSA NonSurvey Aperture X axis coordinate {image primary HDU keyword: APER_X} real 4 arcsec -0.9999995e9  
apertureY [nspid]Multiframe WSA NonSurvey Aperture Y axis coordinate {image primary HDU keyword: APER_Y} real 4 arcsec -0.9999995e9  
aProf1 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 1 (can be non-integer for deblends) {catalogue TType keyword: Areal_1_profile} real 4 pixels   NUMBER
Number of pixels above a series of threshold levels relative to local sky. Levels are set at T, 2T, 4T, 8T … 128T where T is the threshold. These can be thought of as a sort of poor man's radial profile. Note that for now deblended, ie. overlapping images, only the first areal profile is computed and the rest are set to -1 flagging the difficulty of computing accurate profiles.
For blended images this parameter is used to flag the start of the sequence of the deblended components by setting the first in the sequence to 0.
aProf2 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 2 {catalogue TType keyword: Areal_2_profile}
(see glossary entry for aProf1)
int 4 pixels   NUMBER
aProf3 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 3 {catalogue TType keyword: Areal_3_profile}
(see glossary entry for aProf1)
int 4 pixels   NUMBER
aProf4 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 4 {catalogue TType keyword: Areal_4_profile}
(see glossary entry for aProf1)
int 4 pixels   NUMBER
aProf5 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 5 {catalogue TType keyword: Areal_5_profile}
(see glossary entry for aProf1)
int 4 pixels   NUMBER
aProf6 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 6 {catalogue TType keyword: Areal_6_profile}
(see glossary entry for aProf1)
int 4 pixels   NUMBER
aProf7 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 7 {catalogue TType keyword: Areal_7_profile}
(see glossary entry for aProf1)
int 4 pixels   NUMBER
aProf8 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 8 {catalogue TType keyword: Areal_8_profile}
(see glossary entry for aProf1)
int 4 pixels   NUMBER
astigAmpl [nspid]Multiframe WSA NonSurvey Astigmatism: amplitude {image primary HDU keyword: AAMP} real 4   -0.9999995e9  
astigPhi [nspid]Multiframe WSA NonSurvey Astigmatism: angle {image primary HDU keyword: APHI} real 4   -0.9999995e9  
autoGuiderFreq [nspid]Multiframe WSA NonSurvey Autoguider: Frequency {image primary HDU keyword: AGFREQ} real 4   -0.9999995e9  
avSaturLevel [nspid]MultiframeDetector WSA NonSurvey Average saturation level in frame {catalogue extension keyword:  SATURATE} real 4   -0.9999995e9 ??
An estimate directly from saturated images on the frame at what level image saturation occurs, including sky. This varies from detector to detector depending on the relative gains applied to bring them to a uniform flatfield response etc.
avStellarEll [nspid]MultiframeDetector WSA NonSurvey Average stellar ellipticity (1-b/a) {catalogue extension keyword:  ELLIPTIC}
Should not average much above 0.15 for "normal" frames
real 4   -0.9999995e9 src.ellipticity
axis1Length [nspid]MultiframeDetector WSA NonSurvey length of data axis 1 (X-axis size) {image extension keyword: (Z)NAXIS1} int 4     meta.number
axis2Length [nspid]MultiframeDetector WSA NonSurvey length of data axis 2 (Y-axis size) {image extension keyword: (Z)NAXIS2} int 4     meta.number
aY [nspid]Source WSA NonSurvey The galactic extinction correction in the Y band for extragalactic objects real 4 mag -0.9999995e9  
aZ [nspid]Source WSA NonSurvey The galactic extinction correction in the Z band for extragalactic objects real 4 mag -0.9999995e9  



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07/11/2017