Stellar mass map and dark matter distribution in M 31

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Fig. B.1

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Upper panel shows the mass fraction for a radius a_c as a function of N, where d_N is found using Eq. (B.6). Note the high amplification level of the y-axis scale. Lower panel shows the relation between harmonic mean radius a₀, half-mass radius a_c, and radius a_-2; d_N is calculated using Eq. (B.5).

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