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Table E.1.

Questionable runaway candidates. There are three stars in the sample with space velocities that are significantly larger than those of the other candidates.

Star SigMA Group age Nenc s ¯ min Mathematical equation: $ \overline{s}_{\text{min}} $ t ( s ¯ min ) Mathematical equation: $ t(\overline{s}_{\text{min}}) $ vpec,3D vrad Ref.
[Myr] [per 1000] [pc] [Myr] [km/s] [km/s] vrad
Cl* NGC 2264 VAS 133 14 15 . 3 0.3 + 0.6 Mathematical equation: $ 15.3_{-0.3}^{+0.6} $ 171 2.05 6.04±0.75 108.79 120.60 ± 2.00 [b]
Cl* NGC 2264 VAS 133 8 14 . 7 0.7 + 0.8 Mathematical equation: $ 14.7_{-0.7}^{+0.8} $ 168 4.65 6.09±0.75 110.44 120.60 ± 2.00 [b]

Gaia DR3 4096398244806369792 17 20 . 9 0.8 + 0.7 Mathematical equation: $ 20.9_{-0.8}^{+0.7} $ 197 1.47 5.36±0.84 231.28 221.33 ± 26.69 [a]
Gaia DR3 4096398244806369792 21 15 . 5 0.5 + 0.6 Mathematical equation: $ 15.5_{-0.5}^{+0.6} $ 185 0.93 5.62±0.88 234.60 221.33 ± 26.69 [a]
Gaia DR3 4096398244806369792 10 15 . 0 1.4 + 0.9 Mathematical equation: $ 15.0_{-1.4}^{+0.9} $ 167 1.57 4.85±0.54 231.08 221.33 ± 26.69 [a]

Gaia DR3 4111239113458529152 5 10 . 0 0.5 + 1.0 Mathematical equation: $ 10.0_{-0.5}^{+1.0} $ 200 4.18 2.18±0.11 641.88 635.55 ± 8.26 [a]
Gaia DR3 4111239113458529152 15 16 . 9 0.6 + 0.9 Mathematical equation: $ 16.9_{-0.6}^{+0.9} $ 198 10.67 2.32±0.14 643.18 635.55 ± 8.26 [a]

Notes. In all three cases, the main reason for these high velocities are the respective radial velocities, which are included in this table along with the corresponding references ([a]: Gaia DR3; [b]: Hourihane et al. 2023). Additionally, the last two of these are also outliers on the color-magnitude diagram. The status as good runaway stars of these candidates remains doubtful until more research is conducted.

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