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Fig. 4

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Distribution of pairs of SubFind and SubDLe subhalos as a function of the distances between their centers, in proper kiloparsecs, for the identification performed by the all-particle SubDLe (in blue) and stellar SubDLe (in orange). The vertical dashed lines mark the gravitational softening used in the gravitational force calculations for the DM particles (thus the majority of the particles, in blue) and for star particles (in orange).

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