Fig. 4

Dependence on equilibrium temperature of the observed radii of giant planets with Mp ≥ 0.1 MJup and Rp ≥ 0.8 RJup (data from http://exoplanet.eu/). Purple squares, gray circles, and green triangles indicate objects with ρp ≤ 0.25 g cm-3, 0.25 <ρp< 1.5 g cm-3, and ρp ≥ 1.5 g cm-3, respectively. The location of TrES-4b is shown with a red square.
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