Fig. 5
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Diagnostics as a function of the age for different masses, all with Pm = Pr = 1. From left to right and top to bottom, we show the magnetic Reynolds number, the Elsasser number, the magnetic-to-kinetic energy ratio, the Ohmic fraction, total dipolarity, and dipolarity at the dynamo surface. The 4 MJ runs at 0.5, 1, and 10 Gyr have a higher Nρ (see text).
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