X-ray Observations of the Young Open Cluster Sculptoris
نویسنده
چکیده
We present preliminary results from two deep HRI ROSAT exposures on the Sculp-toris open cluster. This cluster, younger than the Pleiades, has photometric indicators that seem to imply a metal-poor cluster. On the contrary detailed analysis of high resolution spectroscopic observations results in a metal abundance higher than the solar value. Furthermore many cluster members show chromospheric emission typical of young stars. X-ray observations reveal a high number of X-ray sources consistent with the young age of the cluster. The time sampling of the pointings allow us to study the variability of the sources on time scales from hours to 6 months-1 year.
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