Free Access
Table 5.
Statistics of the ΔRV (=RVGaia–RVsurvey).
| Survey | Mean ΔRV | Median ΔRV | σ | MAD | N |
|---|---|---|---|---|---|
| (km s−1) | (km s−1) | (km s−1) | (km s−1) | ||
| APOGEE | 0.09 | 0.04 | 4.36 | 0.61 | 177 410 |
| GALAH | 0.61 | 0.49 | 4.40 | 0.76 | 91 416 |
| GES | 0.36 | 0.22 | 4.76 | 0.91 | 1211 |
| RAVE | 0.28 | 0.32 | 5.24 | 1.23 | 436 709 |
| LAMOST | 5.18 | 4.97 | 6.85 | 2.99 | 1 047 324 |
| After RV correction | |||||
| APOGEE | −0.01 | −0.01 | 3.89 | 0.58 | 174 840 |
| GALAH | 0.04 | 0.00 | 3.97 | 0.73 | 86 841 |
| GES | 0.10 | 0.01 | 4.72 | 0.90 | 1195 |
| RAVE | −0.05 | −0.01 | 4.50 | 1.07 | 192 979 |
| LAMOST | 0.09 | −0.06 | 6.55 | 2.92 | 1 008 052 |
Notes. For each survey we report the number of stars in common, the mean with its standard deviation (σ) and the median with its MAD, before and after the correction described in Sect. 5. In this work, we consider the median as the zero point difference of each survey with Gaia.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.