Distribution of the number of star tracers per star for different star particle mass bins (in units of 10⁴ M_⊙) as observed in the simulation (symbols and shaded surfaces) vs. as given by a Poisson distribution with parameter λ = ⟨M_⋆⟩/m_t (dashed). The error bars have been estimated using a bootstrap method. For all stars, the distribution of the number of star tracers per star is approximated by a Poisson distribution with parameter λ.