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Table 11.

Adopted proper motions for the orbit integration, plus orbit parameters of the stars in this work.

ID PMRA PMDE U V W Rmin Rmax ecc Zmax
mas yr−1 mas yr−1 km s−1 km s−1 km s−1 kpc kpc kpc
S1 −51.2 σ = 0.9 −4.7 σ = 1.0
S2 16.79 σ = 0.49 −4.50 σ = 0.18
S3 −24.20 σ = 0.06 −48.96 σ = 0.05
S4 32.43 σ = 0.07 0.85 σ = 0.07

Notes. The distance was derived by PARAM, using BM seismic parameters (see Table 6); radial velocity has been measured from ESO spectra via cross-correlation (see Table B.1) and proper motions were taken from Gaia DR2 catalogue (UCAC-5 for S1, from the flags in Gaia DR2 catalogue). The orbits were integrated using Galpy v.1.4.0 using MWpotential2014 potential.

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