Table 4.
Mean parameters of the genuine thick disk found in the different surveys.
| Survey | Age | σage | Vϕ | σVϕ |
|---|---|---|---|---|
| (Gyr) | (Gyr) | (km s−1) | (km s−1) | |
| LAMOST DR7 MRS | 11.42 | 1.34 | 189.64 | 50.50 |
| GALAH DR3 | 11.29 | 1.06 | 188.32 | 41.33 |
| APOGEE DR17 | 11.20 | 1.49 | 179.02 | 45.65 |
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