The X-ray irradiation of transiting extra-solar planets

Details The X-ray irradiation of transiting extra-solar planets The X-ray irradiation of transiting extra-solar planets

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..164w&link_type=abstract

XMM-Newton Proposal ID #04044501

Physics

Stars, White Dwarfs, Solar System, Hd 209458B, Xmm-Newton Proposal 04044501

Scientific paper

The evolution and observed properties of close-in extra-solar planets may be controlled by X-ray irradiation by their parent stars. Transiting planets provide a unique opportunity to study the effect of irradiation on mass loss from close-in planets and the possible consequent effects on their mass-radius relation. To date, however, theoretical studies have relied on estimates of the irradiating flux in each system. Here we propose to observe the four bright transiting planets with XMM-Newton in order to measure the irradiating flux. In particular we intend to test the suggestion that HD209458b is losing mass due to X-ray irradiation-driven evaporation.

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