X-ray views of young Sun-like stars

Details X-ray views of young Sun-like stars X-ray views of young Sun-like stars

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop..219m&link_type=abstract

XMM-Newton Proposal ID #05060201

Computer Science

Stars, White Dwarfs, Solar System, Dk Cet, Xmm-Newton Proposal 05060201

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 a process of 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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