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Table 1.

Data of the star clusters.

Star cluster Hyades Coma Berenices Praesepe NGC 752
d/pc 47.5 85.9 186.2 438.4
M/M 275 112 311 379
bPl/pc 3.1 2.7 3.7 4.1
rt/pc 9.0 6.9 10.8 9.4 (1.2285°)
t/Myr 680 750 770 1750
n 541 640 833 298
nl 351 348 384 163
nt 190 292 449 135
ϵ 0.298 0.088 −0.078 0.094
nl, 50 − 200 162 133 87 56
nt, 50 − 200 64 111 140 43

x/pc −8344.61 −8305.78 −8439.78 −8294.05
y/pc −0.23 −5.84682 −69.384 275.07
z/pc 10.69 112.516 128.552 −158.408
vx/km s−1 −32.01 8.69065 −33.3617 −8.19
vy/km s−1 212.37 226.515 210.711 216.262
vz/km s−1 6.44 6.16155 −1.83814 −12.81

Notes. Upper section: d: distance Sun–star cluster, M: current stellar mass within the tidal radius rt, bPl: Plummer parameter obtained from the observed half-mass radius, rt: observed tidal radius, t: average of published ages of the star clusters, n: total number of tidal tail members, nl: number of members in the leading tidal tail, nt: number of members in the trailing tidal tail, nl, 50 − 200: number of members in the leading tidal tail at a distance of 50–200 pc from the cluster centre, nt, 50 − 200: number of members in the trailing tidal tail at a distance of 50–200 pc from the cluster centre. Lower section: current position and velocity of the star clusters in the Galactic inertial rest frame used for the Monte Carlo simulations for an assumed solar distance of 8.3 kpc to the Galactic centre, and 27 pc above the Galactic plane and a local rotational velocity of 225 km s−1, as in Jerabkova et al. (2021). The velocity components of the Sun in the Galactic rest frame are 11.1 km s−1 towards to the Galactic centre, 232.24 km s−1 into the direction of Galactic rotation, and 7.25 km s−1 in positive vertical direction. Thus, the peculiar velocity of the Sun is [11.1, 7.24, 7.25] km s−1. See Kroupa et al. (2022) for details.

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