Atmospheric Escape from GL876d

Details Atmospheric Escape from GL876d Atmospheric Escape from GL876d

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.p11a1258t&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #P11A-1258

Mathematics

Logic

6296 Extra-Solar Planets

Scientific paper

GL876d is a ~7.5 Earth-mass planet surrounding an M-star with low-to-intermediate level of chromosphere activity at an orbit closer than the habitable zone of the star. The moderate EUV flux from its star and its large mass make the planet's upper atmosphere relatively constrained. The planet's large mass also suggests a strong intrinsic magnetic field, which could resist the stellar wind at large distances. Both aspects make it promising for GL876d to maintain its atmosphere. We will report both the observational and the theoretical studies on the potential atmosphere of GL876d. In addition, we will study the conditions necessary for planetary atmospheres to be stable against atmospheric escape over long geological timescales.

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