Mass-radius, radius-density, and mass-density diagrams for known exoplanets with parameters determined with a precision <50% (Han et al. 2014). The WASP-47 planets are shown as 68.3% coloured contours for the model-free photodynamical analysis and as dots with 1σ error bars for the analysis using the Dartmouth model (planet b in green, planet c in orange, planet d in blue, and planet e in red). Planet c, whose radius and density are not known, is represented at the top of the mass-radius and mass-density diagrams. The solid lines represent theoretical models for different composition (Zeng & Sasselov 2013).
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