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Fig. 9

image

Mass–radius diagram for all rocky planets with masses between 1 and 5 M and radii between 1 and 2.6 R, as registered in the TEPC at database. The solid circles indicate measurements of the mass and radius of the planets of GJ 9827. The empty circle shows the inferred mass y radius of the nucleus of the third planet under the assumptions made in Sect. 6.1.

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