Table 4
Median radial velocities compared to external catalogues.
| Cat Name | Md(Δ V R) | σ(Δ V R) | Md( |
 |
|---|---|---|---|---|
| km s−1 | km s−1 | km s−1 | km s−1 | |
| CU6GB-cal | −0.01 | 0.20 | 0.14 | 0.07 |
| XHip | 0.35 | 0.51 | 0.13 | 0.10 |
| CU6GB-val | −0.01 | 0.51 | 0.23 | 0.23 |
| RAVE | 0.29 | 1.03 | 0.37 | 0.27 |
| APOGEE | 0.22 | 0.89 | 0.71 | 0.67 |
| SIM | 0.27 | 0.29 | 0.23 | 0.13 |
Notes. The units are km s−1. The
MTA V R (Eq.
17) are compared with the external catalogues described in Sect. 4.1 and 4.2.
Md(ΔV R) quantifies the overall systematic shifts between the RVS and the radial velocities of other catalogues.
) quantifies the overall precision of the RVS radial velocities for the stars belonging to each catalogue. The precision is worse for the stars in APOGEE, which are the faintest.
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