Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.1706l&link_type=abstract
American Astronomical Society, ESS meeting #2, #17.06
Astronomy and Astrophysics
Astronomy
Scientific paper
Low-density Super-Earths, like those in Kepler-11, represent members of a new class of planets. Basic questions about their structure and bulk composition still need to be addressed. Are they, in fact, scaled up rocky planets with thick hydrogen-rich atmospheres; or are they instead miniature Neptunes, with most of their mass in water? Using interior structure models, we constrain the present-day compositions for the five inner planets in Kepler-11. Using thermal evolution models coupled with hydrodynamic mass loss, we then explore the mass, radius, and composition history of each planet. Finally, we perform a dynamical stability check and compare to formation models to check the plausibility of these histories.
Fortney Jonathan J.
Kempton Eliza
Lopez Eric
Miller Natalia
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