Unraveling the mysterious hierarchical triple system HD 181068

We propose the first detailed Xray study of the hierarchical triple system HD181068. As revealed by Kepler observations and subsequent ground basedfollowup, this triple system consists of a Gtype giant primary, orbited by aclose binary once every 45 days. The close binary hosts two dwarfs orbiting eachother with a period of 0.9 days. All components of the triple system eclipseeach other. HD 181068 is a RASS Xray source with an Xray luminosity in excessof 10e31 erg/s. We propose to carry out a pilot study with two XMMNewtonpointings of 10 ks and 50 ks duration to attribute the Xray flux to theindividual triplesystem components, characterize the Xray spectrum in depth,and assess the feasibility of more detailed followup studies. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]