Table 11
Difference between the parameters derived from the two methods (using synthetic spectra) and the reference values for different resolution levels. The synthetic spectra had a signal-to-noise ratio of 100.
| Synthetic spectral fitting | Equivalent width | |||||||||||
| ΔTeff | Δlog (g) | Δ[M/H] | ΔTeff | Δlog (g) | Δ[M/H] | |||||||
| Resolution | μ | σ | μ | σ | μ | σ | μ | σ | μ | σ | μ | σ |
|
|
||||||||||||
| 2000 56 | 192 | 0.14 | 0.67 | −0.03 | 0.17 | 530 | 923 | 0.10 | 1.39 | 0.25 | 1.67 | |
| 7500 | 2 | 13 | 0.00 | 0.03 | 0.01 | 0.01 | 629 | 874 | −0.16 | 1.53 | 0.12 | 1.97 |
| 11 500 | 4 | 6 | 0.00 | 0.02 | 0.01 | 0.01 | 769 | 574 | 0.69 | 1.42 | 0.53 | 0.39 |
| 16 200 | 1 | 5 | 0.00 | 0.01 | 0.01 | 0.01 | 450 | 600 | 0.88 | 1.24 | 0.28 | 0.32 |
| 20 000 | 1 | 3 | 0.00 | 0.01 | 0.00 | 0.00 | 324 | 440 | 0.82 | 1.10 | 0.25 | 0.34 |
| 28 000 | 1 | 4 | 0.00 | 0.01 | 0.00 | 0.00 | 267 | 292 | 0.69 | 0.87 | 0.15 | 0.21 |
| 47 000 | 1 | 4 | 0.00 | 0.01 | 0.00 | 0.01 | 218 | 217 | 0.47 | 0.57 | 0.06 | 0.23 |
| 70 000 | 2 | 5 | 0.00 | 0.01 | 0.00 | 0.01 | 155 | 261 | 0.37 | 0.59 | −0.01 | 0.22 |
Notes. From lower to higher resolution, they approximately correspond to the surveys SDSS DR7 (R = 1800−2200), Rave, Gaia RVS, GES Giraffe HR21, APOGEE, HERMES/GALAH, GES UVES and the standard resolution of the Gaia FGK benchmark stars library.
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