Table E.1

Kinematic properties pertaining to the first group of young metal-poor stars. From left to right the parameters are the Gaia DR3 identifier, the three velocity components in the local standard of rest, the orbital eccentricity, the probability of belonging to a given kinematic population, and the designation of the kinematic population to which the star is affiliated.

Gaia DR3	U(LSR)	V(LSR)	W(LSR)	e	P	Group
	km/s	km/s	km/s	$\cancel{0}$	$\cancel{0}$	$\cancel{0}$
6045456503982565120	51.182	−205.478	−8.106	0.953	0.990	halo
6045459768157880192	58.786	−207.177	−5.415	0.946	0.993	halo
6045464952173727104	51.538	−200.899	1.956	0.917	0.984	halo
6045465055252946560	49.520	−224.141	−9.548	0.994	0.999	halo
6045477910100852992	59.078	−195.153	−4.376	0.893	0.975	halo
6045464814730497152	54.368	−228.714	−4.290	0.931	0.999	halo
6045487736986573056	58.375	−194.460	−3.221	0.895	0.972	halo
6045487874425541760	54.732	−197.180	−5.316	0.906	0.978	halo