ROSAT X-RAY ALL-SKY SURVEY OBSERVATIONS OF HYBRID STARS

We present data from the ROSAT All-Sky Survey for nine hybrid stars, objects showing spectroscopic evidence for cool massive winds and 10(5) K material. Two of the nine stars were detected above a limiting flux threshold of f(x) = 2 x 10(-13) ergs cm-2 s-1. The K3 III star-delta And was detected just at this threshold. The K4 III star alpha-TrA was measured at f(x) = 8 x 10(-13) ergs cm-2 s-1. Since these detections were made in both low- and high-energy bands of the ROSAT 0.1-2.4 keV passband, we suggest that the emissions originate in T almost-equal-to 10(7) K coronae.