Accretion Funnels in Classical T Tauri Stars: Xx Chamaeleontis

We propose to perform a 130 ksec pointing on the classical T Tauri star XX Chawith XMMNewton to obtain a highresolution RGS spectrum. XX Cha would be thethird cTTS observed with high spectral resolution, and just as in TW Hya andBP Tau we expect to find very high densities (log n_e < 13 ), and a depletionof grain forming metals. With these data we want to show that the Xray emissionfrom cTTS arises predominantly from an accretion funnel shock and not fromsolarlike magnetic activity. If so, cTTS would be the big brothers to magneticneutron stars. Further we want to study if the depletion of grain forming metalsis a common feature in these accretion flows that can be ascribed presumably tothe formation of planetesimals in the accretion disks around cTTS. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]