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Table 1
Variables used in the paper.
| Variables | Definitions |
|
|
|
| Local coordinates | |
| r | distance |
| v r | line-of-sight velocity |
| μ | proper motion with respect to the Sun |
| U, V, W | velocities with respect to the LSR |
| U⊙, V⊙, W⊙ | velocity of the Sun with respect to the LSR |
| ΔV |
|
| V a |  ,
asymmetric drift |
| V ′ | Eq. (6) |
| Galactocentric variables | |
| R 0 | Galactocentric radius of the Sun |
| v ⊙ | velocity of the Sun around the Galactic centre |
| v c | velocity of the LSR around the Galactic centre |
| vr, vφ, vz | velocities in cylindrical Galactocentric coordinates |
| σr, σφ, σz | velocity dispersions |
| R | Galactocentric radius |
| z | height above the Galactic plane |
| Radial scalelengths | |
| R E | kinetic energy scalelength  |
| R ν | scalelength of the tracer density ν |
| R d | scalelength of the total surface density |
| R σ | scalelength of  |
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