Interior structure models of terrestrial exoplanets and application to CoRoT-7 b

Details Interior structure models of terrestrial exoplanets and application to CoRoT-7 b Interior structure models of terrestrial exoplanets and application to CoRoT-7 b

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..708w&link_type=abstract

Highlights of Astronomy, Volume 15, p. 708-709

Astronomy and Astrophysics

Astronomy

1

Scientific paper

In this study, we model the internal structure of CoRoT-7b, considered as a typical extrasolar terrestrial planet, using mass and energy balance constraints. Our results suggest that the deep interior is predominantly composed of dry silicate rock, similar to the Earth's Moon. A central iron core, if present, would be relatively small and less massive (<15 wt.% of the planet's total mass) as compared to the Earth's (core mass fraction 32.6 wt.%). Furthermore, a partly molten near-surface magma ocean could be maintained, provided surface temperatures were high enough and the rock component mainly composed of Earth-like mineral phase assemblages.

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