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

Wagner, F.W. and Sohl, F. and Rauer, H. and Hussmann, H. and Grott, M. (2010) Interior structure models of terrestrial exoplanets and application to CoRoT-7b. In: Highlights of Astronomy Proceedings of the International Astronomical Union, 15. Cambridge University Press. pp. 708-709.

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In this study, we model the internal structure of CoRoT-7b as a type example for a terrestrial extrasolar 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 sufficiently high and the rock component was mainly composed of Earth-like mineral phase assemblages.

Document Type:Contribution to a Collection
Title:Interior structure models of terrestrial exoplanets and application to CoRoT-7b
AuthorsInstitution or Email of Authors
Wagner, F.W.frank.wagner@dlr.de
Sohl, F.frank.sohl@dlr.de
Rauer, H.heike.rauer@dlr.de
Hussmann, H.hauke.hussmann@dlr.de
Grott, M.matthias.grott@dlr.de
Journal or Publication Title:Highlights of Astronomy
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 708-709
Corbett, I.F.icorbett@eso.org
Publisher:Cambridge University Press
Series Name:Proceedings of the International Astronomical Union
Keywords:CoRot-7b, extrasolar planets, interiors, equation of state, bulk composition, melting
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Vergleichende Planetologie (old), W - Vorhaben Extrasolare Planeten (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Frank Sohl
Deposited On:02 Nov 2010 10:39
Last Modified:02 Nov 2010 10:39

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