Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.1716s&link_type=abstract
American Astronomical Society, HEAD meeting #11, #17.16; Bulletin of the American Astronomical Society, Vol. 41, p.685
Astronomy and Astrophysics
Astronomy
Scientific paper
Coronal X-ray emission have shown to be a main erosive agent of exoplanet atmospheres, (Sanz-Forcada et al., A&A Letters, submitted). The erosion of the atmospheres is mainly produced by vaporization produced by the X-rays and EUV radiation. As a result of this cumulative effect along the life of the planet, they lose mass and only the lower mass planets survive under strong coronal irradiation. This radiation is mainly produced in the corona of the parent star, but only the X-rays range is currently accessible to space telescopes. A method to calculate the EUV counterpart of the coronal emission has been developed. We present here the results found for X-rays and the modeled EUV radiation in a wide sample of exoplanets, and discuss the results against current theoretical work.
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