Table 2
Stellar parameters for the Gaia benchmark stars.
| Reference values | Results from Method 2 | |||||||||||
| Name | T eff,r | log gr | [Fe/H]r | T eff | σ T eff | log g | [Fe/H] | σ [Fe/H] | V mic | V mac | ||
| (K) | (dex) | (K) | (K) | (dex) | (dex) | (km s-1) | (km s-1) | |||||
|
|
||||||||||||
| μLeo | 4474 | 2.51 | 0.25 | 4513 | 100 | 2.50 | 0.31 | 0.08 | 1.5 | 4.8 | ||
| HD 107328 | 4496 | 2.09 | –0.33 | 4484 | 50 | 2.00 | –0.48 | 0.09 | 1.8 | 4.4 | ||
| – | – | – | 4483 | 50 | 2.01 | –0.45 | 0.06 | 1.8 | 5.4 | |||
| βGem | 4858 | 2.90 | 0.13 | 4846 | 50 | 2.89 | 0.11 | 0.08 | 1.2 | 4.2 | ||
| ϵVir | 4983 | 2.77 | 0.15 | 5056 | 50 | 2.84 | 0.16 | 0.08 | 1.5 | 5.5 | ||
| – | – | – | 5055 | 50 | 2.80 | 0.17 | 0.08 | 1.5 | 5.7 | |||
| ξHya | 5044 | 2.87 | 0.16 | 4991 | 50 | 2.96 | 0.10 | 0.08 | 1.4 | 6.1 | ||
|
|
||||||||||||
| Results from Modified Method 2 | ||||||||||||
|
|
||||||||||||
| Arcturus | 4286 | 1.64 | –0.52 | 4305 | 100 | 1.69 | –0.58 | 0.09 | 1.7 | 5.4 | ||
| – | – | – | 4321 | 100 | 1.63 | –0.61 | 0.09 | 1.7 | 5.2 | |||
| αCet | 3796 | 0.68 | –0.45 | 3888 | 100 | 0.72 | –0.43 | 0.12 | 1.6 | 8.9 | ||
| γSge | 3807 | 1.05 | –0.17 | 3988 | 100 | 0.96 | –0.17 | 0.09 | 1.6 | 6.6 | ||
| αTau | 3927 | 1.11 | –0.37 | 3910 | 100 | 1.12 | –0.27 | 0.11 | 1.4 | 5.7 | ||
| – | – | – | 3930 | 100 | 1.10 | –0.28 | 0.10 | 1.4 | 6.1 | |||
| βAra | 4197 | 1.05 | –0.05 | 4250 | 100 | 1.03 | –0.17 | 0.08 | 3.0 | 10.4 | ||
| – | – | – | 4277 | 100 | 1.26 | –0.13 | 0.08 | 3.0 | 9.8 | |||
Notes. Columns 2 to 4 give the reference values for the stellar parameters. Columns 5 till 11 list our results, derived using Method 2 and Modified Method 2 (Sect. 4.3.2). The first column gives the name of the star. The second and third columns give the recommended effective temperature and surface gravity obtained from Heiter et al. (2015a), while the recommended metallicity from Jofré et al. (2014) is listed in the Col. 4. For some stars we have two spectra from different instruments (see details in Sect. 2.1.1). The second spectrum is indicated by a dash in these three columns. The following seven columns give our results.
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