Computer Science
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop...67m&link_type=abstract
XMM-Newton Proposal ID #06024902
Computer Science
Stars, White Dwarfs, Solar System, Dk Cet, Hd 107146
Scientific paper
We propose to perform X-ray observations of two young Sun-like stars which show evidence of circumstellar debris disks, likely associated to planetary formation. In particular, we aim to observe DK Dra, a 30 Myr old G-type dwarf, characterized by a warm (T ~110 K) dusty disk at 4-6 AU from the star, and HD 107146, a young (100 Myr) solar twin, with a cold extended (~200 AU) debris disk which was recently resolved in scattered light, and at submillimetric and millimetric wavelengths. The proposed observations will allow us to address several issues concerning the formation and evolution of planetary systems around Sun-like stars, the influence of high-energy radiation on the circumstellar medium, and to complement previous studies on the evolution of the coronal emission of solar-type stars.
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