Table 1
Benchmark stars, their literature atmospheric parameters, sources for their observed spectra, nominal spectral resolving power R = λ∕Δλ, and the assumed 1σ uncertainties in the atmospheric parameters and in the placement of the continuum.
| Star | Teff∕K |  |
logg | σlog g |  |
 |
Obs. | R∕105 | σcont.∕% | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hα | Hβ | Hγ | |||||||||
| Sun | 5772a | 4.44a | 0.00h | 0.05 | KPNOl | > 4 | 0.3 | 0.3 | 0.5 | ||
| Procyon | 6556b | 84 | 4.01b | 0.03 | − 0.02i | 0.05 | FOCESm | 0.65 | 0.3 | 0.3 | 1.0 |
| HD 103095 | 5140c | 49 | 4.69e | 0.10 | − 1.13j | 0.20 | FOCESm | 0.65 | 0.3 | 0.3 | 1.0 |
| HD 84937 | 6371d | 84 | 4.05f | 0.03 | − 1.97k | 0.20 | FOCESm | 0.65 | 0.3 | 0.3 | 1.0 |
| HD 140283 | 5787c | 48 | 3.70f | 0.03 | − 2.28k | 0.20 | FOCESm | 0.4 | 0.3 | 0.3 | 1.0 |
| HD 122563 | 4636c | 37 | 1.61g | 0.07 | − 2.43k | 0.20 | UVESn | 0.8 | 0.5 | 0.5 | 1.0 |
Notes. (a) Reference value from Prša et al. (2016); (b) fundamental value from Chiavassa et al. (2012); (c) fundamental value from Karovicova et al. (2018); (d) IRFM value from Casagrande et al. (2011); (e) fundamental value from Bergemann & Gehren (2008); (f) fundamental value from VandenBerg et al. (2014); (g) fundamentalvalue from Heiter et al. (2015); (h) Asplund et al. (2009); (i) ⟨3D ⟩ non-LTE Fe II value from Bergemann et al. (2012); (j) 1D LTE Fe II value from Ramírez et al. (2013) with ⟨3D⟩ non-LTE corrections from Amarsi et al. (2016b); (k) 3D non-LTE Fe II value from Amarsi et al. (2016b); (l) Wallace et al. (2011); (m) Korn et al. (2003); (n) Bagnulo et al. (2003).
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