Table 3
Statistical quantities for the quantities Δ𝒫 where 𝒫 is Teff, log g, [Fe/H], [Ca/Fe] computed for two G-magnitude ranges.
| Δ𝒫 | mean | s.d. | # | mean | s.d. | # | p-value |
|---|---|---|---|---|---|---|---|
| [3.47, 11[ | [11, 13.87] | ||||||
| Full intersection (2079 stars) | |||||||
| ΔTeff (K) | −10 | 103 | 171 | 98 | 171 | 1768 | 6.0 × 10−26 |
| Δ log gGaia,uncal | −0.32 | 0.30 | 167 | −0.17 | 0.39 | 1408(a) | 2.6 × 10−7 |
| Δ log gGaia,cal | −0.05 | 0.26 | 167 | 0.10 | 0.36 | 1408(a) | 1.0 × 10−11 |
| Δ[Fe/H] | −0.07 | 0.12 | 171 | 0.04 | 0.17 | 1733(a) | 6.1 × 10−23 |
| Δ[Ca/Fe] | 0.04 | 0.13 | 157 | 0.05 | 0.15 | 346 | 0.18 |
| U580 only (806 stars) | |||||||
| ΔTeff (K) | −12 | 106 | 137 | 104 | 160 | 669 | 2.6 × 10−20 |
| Δ log gGaia,uncal | −0.35 | 0.27 | 137 | −0.14 | 0.38 | 669 | 6.9 × 10−9 |
| Δ log gGaia,cal | −0.07 | 0.23 | 137 | 0.12 | 0.35 | 669 | 7.2 × 10−13 |
| Δ[Fe/H] | −0.07 | 0.11 | 137 | 0.04 | 0.17 | 669 | 3.0 × 10−19 |
| Δ[Ca/Fe] | 0.04 | 0.12 | 136 | 0.05 | 0.11 | 253 | 0.44 |
| HR15N only (818 stars) | |||||||
| ΔTeff (K) | 89 | 185 | 818 | ||||
| Δ log gGaia,uncal | −0.21 | 0.39 | 445 (a) | ||||
| Δ log gGaia,cal | 0.05 | 0.36 | 445 (a) | ||||
| Δ[Fe/H] | 0.04 | 0.18 | 770 (a) | ||||
| Δ[Ca/Fe] | 0.01 | 0.22 | 25 | ||||
| Giants only, based on log gGES < 3.5 (1246 stars) | |||||||
| ΔTeff (K) | −5 | 87 | 117 | 107 | 145 | 1129 | 4.3 × 10−20 |
| Δ log gGaia,uncal | −0.41 | 0.29 | 117 | −0.20 | 0.40 | 1129 | 1.1 × 10−12 |
| Δ log gGaia,cal | −0.06 | 0.29 | 117 | 0.13 | 0.38 | 1129 | 9.3 × 10−11 |
| Δ[Fe/H] | −0.08 | 0.12 | 117 | 0.04 | 0.17 | 1126 | 4.9 × 10−20 |
| Δ[Ca/Fe] | 0.03 | 0.13 | 108 | 0.04 | 0.15 | 293 | 0.33 |
| Dwarfs only, based on log gGES ≥ 3.5 (329 stars) | |||||||
| ΔTeff (K) | −17 | 134 | 50 | 103 | 258 | 279 | 8.4 × 10−8 |
| Δ log gGaia,uncal | −0.12 | 0.21 | 50 | −0.09 | 0.31 | 279 | 0.06 |
| Δ log gGaia,cal | −0.03 | 0.27 | 50 | −0.02 | 0.27 | 279 | 0.12 |
| Δ[Fe/H] | −0.05 | 0.13 | 50 | 0.07 | 0.19 | 273 | 1.6 × 10−7 |
| Δ[Ca/Fe] | 0.09 | 0.12 | 49 | 0.09 | 0.13 | 53 | 0.61 |
Notes. Columns 2, 3 and 4 (resp., 5, 6 and 7) gives the mean, standard deviation and number of stars for the first (resp., second) G range. The last column gives the p-value of the Kolmogorov-Smirnov two-sample test. The different blocks of the table give the statistical quantities for respectively the full intersection, the intersection restricted to stars observed by Gaia-ESO only with UVES U580 or only with GIRAFFE HR15N, the intersection restricted to giant or dwarf stars based on the GES log g. For the selection restricted to stars observed with HR15N, only 11 stars are found in the bright G range; only the statistical quantities for the faint range are provided. For some stars lacking an estimate of the surface gravity log g, Gaia-ESO could derive a gravity index. Used with the effective temperature, it made possible the determination of a metallicity estimate [Fe/H]. This explains why there are more stars with an estimate of [Fe/H] than with an estimate of log g.
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