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Fig. 6

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a) Planetary mass vs. semi-major axis for all CoRoT planets, the confirmed Kepler planets (filled circles) and other transiting planets from ground-based observations (small open circles) within 0.25 AU. The large open circle is CoRoT-21b. b) Planetary mass-radius relationship for the CoRoT planets, confirmed Kepler planets (filled circles) and the transiting planets from ground-based observations (small open circles). Also drawn are lines of constant density. Jupiter and CoRoT-21b (circles) follow almost the same line of constant density and are directly comparable.

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