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We propose an extensive investigation of the impact of stellar Xrays on theplanetforming molecular environments of T Tauri stars by combining Xray datafrom XMMNewton with novel farinfrared spectroscopy from our Herschel OpenTime Key Project and complementary midinfrared spectroscopy from Spitzer. Theprincipal goals are, i) to identify Xray tracers in the Herschel spectralrange, ii) to study the potential impact of Xrays on circumstellar disks, andiii) to model physical and chemical conditions in the regions where the Xrayimpact is significant. We wish to understand how Xray radiation influencesstar and planet formation through physical and chemical processing of disks.Understanding the distribution of the astrobiologically important water plays a key role. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]