CLASSICAL T TAURI STARS: THE BIG BROTHERS OF NEUTRON STARS questionMark

We propose to perform a 130 ksec pointing on the classical T Tauri star (cTTS)BP Tau with XMMNewton. The primary goal of the proposed observations is toobtain a highresolution RGS spectrum of this cTTS.In analogy to the previouslyobtained high resolution spectrum of the cTTS TW Hya we expect to find highdensities (n virgul 10**13 cm**3) and a depletion of grain forming metals. We wantto establish that the Xray emission from BP Tau arises from an accretion funnelshock rather than usual magnetic activity. Thus cTTS would be the bigbrothers of magnetic neutron stars. Further we want to determine whether thedepletion of grain forming metals is a common feature in these accretion flowsthat can be ascribed to the presumed formation of planetesimals in the accretion disks. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]