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\paragraph{Parameters - SFR, IMF and z}  The authors assume a constant Star Formation Rate (0-12Gyr) and a time independent IMF \cite{kroupa2001} \cite{kroupa}  . The metallicity parameter [Fe/H] is constant for the duration of a BSE code run (i.e. it is age-independent and uniform) so the authors combined several runs with different upper and lower IMF limits in order to mimic the observed [Fe/H] distributions. \paragraph{Parameters - orbit-sizes, mass-ratios, eccentricities}  \label{par:_f_a_q_e_}