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We extend the results of a previous ROSAT x-ray raster survey of the open cluster α Persei by the analysis of three 22-25 ksec ROSAT PSPC pointings in this relatively nearby (d∼170 pc) and young (age ∼50 Myr) open cluster. The present study reports on those catalogued stars in the cluster region which are found to be associated, or possibly associated, with an x-ray source. Out of a total of 222 sources, approximately 80 sources are identified with a catalogued star. We detect all previously known K dwarfs, and a majority of M dwarfs within the higher sensitivity, inner PSPC regions. The results from the deep pointings are consistent with those from the previous raster survey of this cluster in terms of the x-ray luminosities measured for sources in common, the detection frequencies among cluster members as a function of spectral type, and the distribution of Lx as a function of color. The x-ray detections and upper limits provided by the PSPC observations have been combined with the raster survey results to create a merged raster/PSPC dataset reflecting the x-ray properties of the a Per cluster. The V sin i activity relation among G/K members is reviewed using the combined dataset. The α Per members with υ sin i> 30 km/s all show saturated levels of coronal activity, with the saturation level decreasing slowly from log(LX/Lbol)∼-3 at 50 km/s to log(LX/Lbol)∼ 3.4 at 200 km/s. The stars with υ sin i X/L bol31 ergs/s) for three a Per members.
Prosser et al. (Tue,) studied this question.