| Merged, seamless point source catalogue derived from the UKIDSS GCS |
| This view defines a subset of point-like sources from the UKIDSS Galactic Clusters Survey (GCS). If your science application requires a seamless selection of sources consistently classified as point-like (i.e. stars) in the GCS 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 reasonable completeness and NOT high reliability. If a very clean, highly reliable but incomplete selection is sufficient, then use view reliableGcsPointSource. Detection is required in YJHK; single passband detections will NOT appear in this view. |
SELECT *
FROM gcsSource
/* Seamless selection of unique objects: */
WHERE (priOrSec <= 0 OR priOrSec = frameSetID)
/* Good quality, likely point source detections in Y, J, H and K1: */
AND yClass BETWEEN -2 AND -1 AND yppErrBits < 256
AND jClass BETWEEN -2 AND -1 AND jppErrBits < 256
AND hClass BETWEEN -2 AND -1 AND hppErrBits < 256
AND k_1Class BETWEEN -2 AND -1 AND k_1ppErrBits < 256
/* Good quality, likely point detection, OR no detection, in Z and K2: */
AND (zClass BETWEEN -2 AND -1 OR zClass = -9999) AND zppErrBits < 256
AND (k_2Class BETWEEN -2 AND -1 OR k_2Class = -9999) AND k_2ppErrBits < 256
The details of the table defined by this view are available here.