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Table 1

υc at which the HCM clustering is stopped for each family for different Nd of the artificial background in units of m s−1.

Nd (frac.) 1 3/4 2/3 1/2 1/3 1/4 1/5 1/10 1/100
Baptistina 150 150 150 150 165 165 175 200 540
Euterpe 80 80 80 80 115 225 160 280 540
Flora 200 200 200 200 225 225 225 265 547
Lucienne 95 95 95 95 110 180 180 252 667
Massalia 135 135 135 135 140 185 195 215 497
Nysa 140 140 140 150 150 190 195 215 450
Vesta 145 145 145 145 180 205 205 245 517

Notes. These are the median values found from applying the HCM to 100 realizations of the artificial background as shown in Fig. A.1. The columns correspond to uniformly decreasing the Nd of the artificial background to fractions of the original total number of bodies, 18 191, as explained in Sect. 3.1.

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