Open Access
Table B.2.
Parameters of the best fitting models for tests using only spatial bins with 1000 stars or more in the fit.
| Parameter | Classical | Classical twisted | vR term | vR term twisted |
|---|---|---|---|---|
| h7 [kpc] | 0.020 ± 0.012 | 0.047 ± 0.027 | 0.0070 ± 0.0042 | 0.30 ± 0.11 |
| h8 [kpc] | 0.030 ± 0.017 | 0.064 ± 0.035 | 0.0073 ± 0.0046 | 0.087 ± 0.056 |
| h9 [kpc] | 0.078 ± 0.026 | 0.121 ± 0.045 | 0.0156 ± 0.0066 | 0.093 ± 0.047 |
| h10 [kpc] | 0.235 ± 0.037 | 0.327 ± 0.078 | 0.040 ± 0.012 | 0.161 ± 0.056 |
| h11 [kpc] | 0.581 ± 0.054 | 0.80 ± 0.16 | 0.076 ± 0.023 | 0.215 ± 0.071 |
| h12 [kpc] | 1.207 ± 0.096 | 1.59 ± 0.29 | 0.126 ± 0.039 | 0.254 ± 0.076 |
| h13 [kpc] | 2.27 ± 0.20 | 2.84 ± 0.51 | 0.146 ± 0.045 | 0.225 ± 0.063 |
| h14 [kpc] | 3.39 ± 0.49 | 3.79 ± 0.73 | 0.126 ± 0.041 | 0.165 ± 0.048 |
| h15 [kpc] | 3.3 ± 1.2 | 2.5 ± 1.2 | 0.045 ± 0.028 | 0.055 ± 0.031 |
| h16 [kpc] | 2.6 ± 1.7 | 2.4 ± 1.7 | 0.021 ± 0.019 | 0.021 ± 0.020 |
| ϕw, 0 [deg] | 138.6 ± 1.8 | 138.7 ± 2.0 | 138.6 ± 1.6 | 139.8 ± 1.8 |
| ϕw, 1 [deg kpc−1] | 4.1 ± 2.4 | −1.6 ± 2.1 | ||
| ωp, 0 [km s−1 kpc−1] | −13.46 ± 0.25 | −14.42 ± 0.65 | 32 ± 15 | 7.0 ± 9.4 |
| ωp, 1 [km s−1 kpc−2] | 0.35 ± 0.24 | 7.4 ± 1.8 |
Notes. These results are consistent with our main model, but with significantly larger uncertainties in the outer disc.
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.