X-Ray Observations of Planetary Transits: Secondary Eclipse

Details X-Ray Observations of Planetary Transits: Secondary Eclipse X-Ray Observations of Planetary Transits: Secondary Eclipse

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop...21w&link_type=abstract

XMM-Newton Proposal ID #06009701

Physics

Stars, White Dwarfs, Solar System, Hd 189733 B

Scientific paper

The effect of stellar X-rays on their nearby gas-giant planets appears to be significant. The X-rays have been cited at the cause of excess heating of the planet which can induce mass loss. Further, it has been argued that the magnetic fields of the two bodies can interact. Recent statistical analysis of stars possessing hot-Jupiters indicates that their activity could be enhanced by as much as a factor of 2 and observations in Ca II HK and X-ray phased to the planetary orbital periods show that there could be in situ X-ray enhancements of as much as 50%. This makes it possible to detect when the interacting zone moves behind the star. We propose to observe the secondary eclipse of two nearby (<20 pc.) systems HD 189733 and GJ 436.

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