HIGH ENERGY RADIATION IN STARS HOSTING PLANETS

We intend to measure the radiation in the Xray band (especially the emission atenergies higher than 1 keV) of four stars known to host giant planets. The Xrayspectra will be used as input in our models to study the effects of highenergyradiation on planet atmospheres. The selected stars have Xray luminositysimilar to that of young solar analogs, and will serve as a first step to testthe influence of the highenergy radiation on the early planetary atmospheresanalogous to the young stages of the Solar system, and its subsequent evolution. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]