| Merged, seamless point source catalogue derived from the UKIDSS GPS |
| This view defines a subset of point-like sources from the UKIDSS Galactic Plane Survey (GPS). If your science application requires a seamless selection of sources consistently classified as point-like (i.e. stars) in the GPS then use this view. NB: as always, there is a trade-off between completeness and reliability. If completeness is more important than high reliability, then use this view since it is optimised for completeness and NOT high reliability. If a very clean, highly reliable but incomplete selection is required, then use view reliableGpsPointSource. Because completeness is optimised over reliability here, discrete classification codes are not used; instead, morphological selection is done using cuts on profile statistics and image ellipticity. The selection is based on +/- 3 sigma profile statistic cuts, 33% image elongation cuts, and detection required in JHK (e.g. single passband detections will NOT appear in this view). |
SELECT *
FROM gpsSource
WHERE (priOrSec<=0 OR priOrSec=frameSetID) -- seamless selection
AND jClassStat BETWEEN -3.0 AND +3.0 AND jEll<0.25 -- good J point det
AND hClassStat BETWEEN -3.0 AND +3.0 AND hEll<0.25 -- good H point det
AND k_1ClassStat BETWEEN -3.0 AND +3.0 AND k_1Ell<0.25 -- good K1 point det
AND ((k_2ClassStat BETWEEN -3.0 AND +3.0 AND k_2Ell<0.25) OR k_2Class = -9999) -- good K2 point det OR no K2 det
AND ((k_3ClassStat BETWEEN -3.0 AND +3.0 AND k_3Ell<0.25) OR k_3Class = -9999) -- good K3 point det OR no K3 det