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Table 4

Same as Table 3, but here α and γ are the parameters of the square-root function of the velocity dispersion as a function of age in Gyr (Eq. (2)).

Parameter Caldwell Sofue

Solar motion
U 12.92 ± 1.14 12.79 ± 0.85
V 0.92 ± 0.21 0.96 ± 0.25
W 7.08 ± 0.14 7.12 ± 0.17
Vertex deviation
V D a 0.0435 ± 0.0148 0.0458 ± 0.0152
V D b 0.0148 ± 0.0087 0.0133 ± 0.0064

Thin disk
α 32.33 ± 1.96 32.23 ± 1.89
γ 40.41 ± 2.74 42.55 ± 2.38
σ V / σ U 0.57 ± 0.03 0.57 ± 0.03
σ W / σ U 0.46 ± 0.02 0.47 ± 0.02
h σ U 7493. ± 7009. 14776. ± 7946.
h σ W 8578. ± 5896. 16432. ± 9622.

Thick disk
σ U 39.05 ± 3.04 41.23 ± 1.56
σ V 32.31 ± 1.44 32.90 ± 1.87
σ W 28.61 ± 1.27 26.92 ± 1.12

Old thick disk
σ U 80.03 ± 10.92 81.31 ± 8.73
σ V 57.35 ± 7.29 57.98 ± 7.46
σ W 61.89 ± 6.09 59.03 ± 8.25

Lr 5395. ± 42. 5417. ± 29.
BIC 10 874 ± 85. 10916. ± 58.

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