We present the results of a deep (J=19.1mag) infrared (ZY JHK) survey over the full {alpha} Per open cluster extracted from the Data Release 9 of the United Kingdom Infrared Telescope Infrared Deep Sky Survey Galactic Clusters Survey (UKIDSS). We have selected ~700 cluster member candidates in ~56 square degrees in {alpha} Per by combining photometry in five near-infrared passbands and proper motions derived from the multiple epochs provided by the UKIDSS Galactic Clusters Survey (GCS) Data Release 9 (DR9). We also provide revised membership for all previously published {alpha} Per low-mass stars and brown dwarfs recovered in GCS based on the new photometry and astrometry provided by DR9.

Cone search capability for table J/MNRAS/426/3403/tablea1 (Previously-known members recovered in GCS DR9)

Cone search capability for table J/MNRAS/426/3403/tableb1 (New members selected by probabilistic approach)

Cone search capability for table J/MNRAS/426/3403/tablec1 (New members selected from photometry and proper motions)

Cone search capability for table J/MNRAS/426/3403/tabled1 (Y JHK-only (top) and JHK-only (bottom) detections)

Cone search capability for table J/MNRAS/426/3403/tablee1 (Substellar multiple system candidates identified photometrically in {alpha} Per)