Fig. 8
Orbital elements of migrating planets in a circumbinary disc around the Kepler-38 system with different masses. Top panel: semi-major axis of the planet. Bottom panel: eccentricity of the planet. The black lines show the observed values, for the eccentricity only an upper limit is known. The upper mass limit for Kepler-38b is mp = 0.384 Mjup.
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