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Table 2.
Population parameters, stellar parameters, and data of our Bayesian hierarchical model.
| Ψ | Population parameters |
| ρh = {40, 80, 160, 320} | Mid-plane densities of matter components with different scale heights |
| ak | Weights of the mid-plane velocity distribution (with the constraint ∑ak = 1) |
| σU, k, σV, k, σW, k | Dispersions of the velocity distribution |
 |
Mean values of the velocity distribution |
| Z⊙ | Height of the Sun with respect to the Galactic plane |
| W⊙ | Vertical velocity of the Sun in the rest frame of the Galactic plane |
| ψi = 1, …, N | Stellar parameters of the ith star |
| Xi = (Xi, Yi, Zi) | Spatial position with respect to the Sun |
| Vi = (Ui, Vi, Wi) | Velocity in the solar rest frame |
| MG, i | Absolute magnitude in the Gaia G-band |
 |
Data of the ith star |
 |
Apparent magnitude in the Gaia G-band |
 ,  |
Galactic longitude and latitude |
 |
Parallax |
 ,  |
Proper motions |
 |
Error covariance matrix for proper motions and parallax |
 ,  |
Radial velocity and associated uncertainty (not available for all stars) |
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