Table 4
Measured or calibrated angular diameters and bolometric fluxes, and their uncertainties (absolute, u, and in percent, %u) for Gaia FGK benchmark stars.
| Name | θLD [mas] | u(θLD) | %u(θLD) | Band | Ref(θLD) | Fbol [10-9 W m-2] | u(Fbol) | %u(Fbol) | Ref(Fbol) |
|
|
|||||||||
| F dwarfs | |||||||||
| Procyon | 5.390 | 0.030 | 0.6 | K | Ch | 17.8600 | 0.8900 | 5.0 | A |
| HD 84937 | 0.153 | 0.005 | 3.0 | – | K04* | 0.0127 | 0.0001 | 1.1 | B98 |
| HD 49933 | 0.445 | 0.012 | 2.7 | 735 nm | B11 | 0.1279 | 0.0014 | 1.1 | B98 |
|
|
|||||||||
| FGK subgiants | |||||||||
| δ Eri | 2.394 | 0.029 | 1.2 | K | T | 1.1500 | 0.0008 | 0.1 | Bo13 |
| HD 140283 | 0.353 | 0.013 | 3.7 | 720 nm | C15 | 0.0386 | 0.0008 | 2.0 | A96* |
| ϵ For | 0.788 | 0.016 | 2.0 | – | K04* | 0.1425 | 0.0066 | 4.6 | H* |
| η Boo | 2.189 | 0.014 | 0.6 | K | vB | 2.2100 | 0.0282 | 1.3 | vB |
| β Hyi | 2.257 | 0.019 | 0.8 | 700 nm | N07 | 2.0190 | 0.0525 | 2.6 | B98 |
|
|
|||||||||
| G dwarfs | |||||||||
| α Cen A | 8.511 | 0.020 | 0.2 | K | K | 27.1600 | 0.2670 | 1.0 | Bo13 |
| HD 22879 | 0.382 | 0.011 | 3.0 | – | K04* | 0.0577 | 0.0006 | 1.1 | B98 |
| μ Cas | 0.973 | 0.009 | 0.9 | K ′ | Bo08 | 0.2504 | 0.0028 | 1.1 | B98 |
| τ Cet | 2.015 | 0.011 | 0.5 | K ′ | D | 1.1620 | 0.0128 | 1.1 | B98 |
| α Cen B | 6.000 | 0.021 | 0.4 | K | B06 | 8.9800 | 0.1220 | 1.4 | Bo13 |
| 18 Sco | 0.676 | 0.006 | 0.9 | 700 nm | Ba | 0.1734 | 0.0090 | 5.2 | Bo13 |
| μ Ara | 0.763 | 0.015 | 2.0 | – | K04* | 0.2354 | 0.0047 | 2.0 | A95* |
| β Vir | 1.450 | 0.018 | 1.2 | 700 nm | N09 | 0.9590 | 0.0105 | 1.1 | B98 |
|
|
|||||||||
| FGK giants | |||||||||
| Arcturus | 21.050 | 0.210 | 1.0 | H | L | 49.8000 | 1.2948 | 2.6 | G |
| HD 122563 | 0.940 | 0.011 | 1.2 | K | C12 | 0.1303 | 0.0061 | 4.7 | H* |
| μ Leo | 2.930 | 0.040 | 1.4 | – | C99* | 1.1458 | 0.0530 | 4.6 | H* |
| β Gem | 7.980 | 0.080 | 1.0 | opt | M | 11.8200 | 0.5319 | 4.5 | M |
| ϵ Vir | 3.280 | 0.030 | 0.9 | opt | M | 2.2100 | 0.0994 | 4.5 | M |
| ξ Hya | 2.386 | 0.021 | 0.9 | K | T | 1.2280 | 0.0319 | 2.6 | B98 |
| HD 107328 | 1.740 | 0.020 | 1.1 | – | C99* | 0.4122 | 0.0195 | 4.7 | H* |
| HD 220009 | 2.045 | 0.034 | 1.7 | 800 nm | Tp | 0.4409 | 0.0206 | 4.7 | H* |
|
|
|||||||||
| M giants | |||||||||
| α Tau | 20.580 | 0.030 | 0.1 | K | RR | 33.5700 | 1.3500 | 4.0 | RR |
| α Cet | 12.200 | 0.040 | 0.3 | K | W4 | 10.3000 | 0.7000 | 6.8 | W4 |
| β Ara | 5.997 | 0.037 | 0.6 | K | Tp | 3.7179 | 0.1718 | 4.6 | H* |
| γ Sge | 6.060 | 0.020 | 0.3 | K | W3 | 2.5700 | 0.1300 | 5.1 | W3 |
| ψ Phe | 8.130 | 0.200 | 2.5 | K | W2 | 3.2000 | 0.3000 | 9.4 | W2 |
|
|
|||||||||
| K dwarfs | |||||||||
| ϵ Eri | 2.126 | 0.014 | 0.7 | K ′ | D | 1.0000 | 0.0200 | 2.0 | A96* |
| Gmb 1830 | 0.679 | 0.015 | 2.2 | K | C12 | 0.0834 | 0.0009 | 1.1 | B98 |
| 61 Cyg A | 1.775 | 0.013 | 0.7 | K | K08 | 0.3844 | 0.0051 | 1.3 | M13 |
| 61 Cyg B | 1.581 | 0.022 | 1.4 | K | K08 | 0.2228 | 0.0032 | 1.4 | M13 |
Notes. See text for description, and table notes for references. An asterisk indicates indirect determinations of θLD and Fbol values determined from calibrations. The column headed “Band” indicates the wavelength band of the interferometric observations – “opt” for several optical wavelengths, H for several wavelengths from 1.5 to 1.8 μm, K or K′ for K-band (about 2 μm), or wavelength in nm.
Reference. For θLD: B06 ... Bigot et al. (2006); B11 ... Bigot et al. (2011); Ba ... Bazot et al. (2011); Bo08 ... Boyajian et al. (2008); C12 ... Creevey et al. (2012); C15 ... Creevey et al. (2015); C99 ... Cohen et al. (1999); Ch ... Chiavassa et al. (2012); D ... di Folco et al. (2007); K ... Kervella et al. (2003b); K08 ... Kervella et al. (2008); K04 ... indirect, using surface-brightness relations by Kervella et al. (2004a); M ... Mozurkewich et al. (2003); L ... Lacour et al. (2008, τRoss = 1; N07 ... North et al. (2007); N09 ... North et al. (2009); RR ... Richichi & Roccatagliata (2005); T ... Thévenin et al. (2005); Tp ... Thévenin et al., in prep., VLTI/AMBER measurement for β Ara, CHARA/VEGA for HD 220009; vB ... van Belle et al. (2007); W2/W3/W4 ... Wittkowski et al. (2004, 2006b,a, τRoss = 1. Additional references for Fbol: A ... Aufdenberg et al. (2005); A95 ... Alonso et al. (1995) calibration for dwarf stars; A96 ... Alonso et al. (1996a, their Table 4); B98 ... Blackwell & Lynas-Gray (1998), uncertainties of 1.1% for dwarfs and 2.6% for giants and subgiants following di Benedetto (1998, Sect. 3.2, p. 863); Bo13 ... Boyajian et al. (2013), G ... Griffin & Lynas-Gray (1999), uncertainty of 2.6% from Koch & McWilliam (2008); H ... from the V magnitude and the bolometric correction BCV derived from the calibration of Alonso et al. (1999b); M13 ... Mann et al. (2013).
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