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Table 7
Masses M, parallaxes π, and luminosities L, and their uncertainties (absolute, u, and in percent, %u), for Gaia FGK benchmark stars.
| Name | M [M⊙] | u(M) | %u(M) | π [mas] | u(π) | %u(π) | log L/L⊙ | u(log L/L⊙) | LX/L [10-6] |
|
|
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| F dwarfs | |||||||||
| Procyon | 1.50 | 0.07 | 5 | 284.52 | 1.27 | 0.45 | 0.839 | 0.022 | 0.72 |
| HD 84937 | 0.75 | 0.04 | 5 | 12.24 | 0.20 | 1.63 | 0.424 | 0.005 | |
| HD 49933 | 1.17 | 0.06 | 5 | 33.68 | 0.42 | 1.25 | 0.547 | 0.005 | 23 |
|
|
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| FGK subgiants | |||||||||
| δ Eri | 1.13 | 0.05 | 5 | 110.62 | 0.22 | 0.20 | 0.468 | 0.000 | 0.08 |
| HD 140283 | 0.68 | 0.17 | 24 | 17.18 | 0.26 | 1.51 | 0.612 | 0.009 | |
| ϵ For | 0.91 | 0.16 | 17 | 31.05 | 0.36 | 1.16 | 0.665 | 0.020 | |
| η Boo | 1.64 | 0.07 | 5 | 87.77 | 1.24 | 1.41 | 0.953 | 0.006 | 0.31 |
| β Hyi | 1.15 | 0.04 | 3 | 134.07 | 0.11 | 0.08 | 0.546 | 0.011 | 0.48 |
|
|
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| G dwarfs | |||||||||
| α Cen A | 1.11 | 0.04 | 3 | 747.10 | 1.20 | 0.16 | 0.182 | 0.004 | 0.38 |
| HD 22879 | 0.75 | 0.06 | 7 | 39.13 | 0.57 | 1.46 | 0.071 | 0.005 | |
| μ Cas | 0.58 | 0.08 | 15 | 132.40 | 0.82 | 0.62 | –0.350 | 0.005 | |
| τ Cet | 0.71 | 0.03 | 4 | 273.96 | 0.17 | 0.06 | –0.315 | 0.005 | 0.59 |
| α Cen B | 0.93 | 0.06 | 6 | 747.10 | 1.20 | 0.16 | –0.298 | 0.006 | |
| 18 Sco | 1.02 | 0.06 | 6 | 71.93 | 0.37 | 0.51 | 0.020 | 0.023 | |
| μ Ara | 1.19 | 0.06 | 5 | 64.48 | 0.31 | 0.48 | 0.248 | 0.009 | |
| β Vir | 1.34 | 0.04 | 3 | 91.50 | 0.22 | 0.24 | 0.554 | 0.005 | 1.8 |
|
|
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| FGK giants | |||||||||
| Arcturus | 1.03 | 0.21 | 20 | 88.83 | 0.53 | 0.60 | 2.295 | 0.011 | |
| HD 122563 | 0.86 | 0.03 | 3 | 4.22 | 0.35 | 8.29 | 2.360 | 0.020 | |
| μ Leo | 1.69 | 0.42 | 25 | 26.27 | 0.16 | 0.61 | 1.715 | 0.020 | |
| β Gem | 2.30 | 0.40 | 18 | 96.52 | 0.24 | 0.25 | 1.598 | 0.020 | |
| ϵ Vir | 3.02 | 0.11 | 4 | 29.75 | 0.14 | 0.47 | 1.892 | 0.020 | |
| ξ Hya | 2.84 | 0.12 | 4 | 25.14 | 0.16 | 0.64 | 1.784 | 0.011 | |
| HD 107328 | 1.41 | 0.41 | 29 | 10.60 | 0.25 | 2.36 | 2.060 | 0.021 | |
| HD 220009 | 0.83 | 0.21 | 26 | 7.55 | 0.40 | 5.30 | 2.383 | 0.020 | |
|
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| M giants | |||||||||
| α Tau | 0.96 | 0.41 | 43 | 48.92 | 0.77 | 1.57 | 2.642 | 0.017 | |
| α Cet | 1.76 | 0.91 | 52 | 13.10 | 0.44 | 3.36 | 3.273 | 0.030 | |
| β Ara | 8.21 | 1.88 | 23 | 4.54 | 0.61 | 13.44 | 3.751 | 0.020 | |
| γ Sge | 1.11 | 0.82 | 75 | 12.61 | 0.18 | 1.43 | 2.704 | 0.022 | |
| ψ Phe | 1.00 | 0.40 | 40 | 9.54 | 0.20 | 2.10 | 3.041 | 0.041 | |
|
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| K dwarfs | |||||||||
| ϵ Eri | 0.80 | 0.06 | 8 | 310.95 | 0.16 | 0.05 | –0.490 | 0.009 | 17 |
| Gmb 1830 | 0.64 | 0.03 | 4 | 109.98 | 0.41 | 0.37 | –0.666 | 0.005 | |
| 61 Cyg A | 0.69 | 0.05 | 7 | 286.83 | 6.77 | 2.36 | –0.835 | 0.006 | 5 |
| 61 Cyg B | 0.61 | 0.05 | 8 | 285.89 | 0.55 | 0.19 | –1.069 | 0.006 | |
Notes. See text for description and references. Column LX/L gives the ratio of X-ray luminosity measured by ROSAT (Hünsch et al. 1998) to bolometric luminosity.
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