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Table 1
Stellar parameters of α Tau (Sect. 2.2) and α Cet (Sect. 2.3) based on published data.
| α Tau | Ref. | α Cet | Ref. | |
| Star 1 | Star 2 | |||
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| Name | Aldebaran | Menkar | ||
| HR | 1457 | 911 | ||
| MK type | K5 III | M1.5 IIIa | ||
| Teff (K) | 3930 ± 40 | (a) | 3800 ± 60 | (a) |
| Teff (K) | 3920 ± 130 | (b) | 3730 ± 75 | (i) |
| L [L⊙] | 440 ± 20 | (c) | 1870 ± 130 | (c) |
| log (g (cm s-2)) | 1.2 ± 0.1 | (a) | 0.9 ± 0.1 | (a) |
| log (g (cm s-2)) | 1.2 ± 0.5 | (b) | 0.7 ± 0.3 | (i) |
| M [M⊙] | 1.3 ± 0.3 | (d) | 3.0 ± 0.5 | (d) |
| [Fe/H] | −0.22 ± 0.11 | (e) | +0.02 ± 0.03 | (i) |
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| V − I | 2.17 ± 0.02 | (f) | 2.51 ± 0.02 | (f) |
| J − K | 0.97 ± 0.03 | (f) | 1.08 ± 0.03 | (f) |
| V − K | 3.67 ± 0.03 | (f) | 4.21 ± 0.03 | (f) |
| vrad [km s-1] | 54.26 ± 0.03 | (g) | −26.08 ± 0.02 | (g) |
| v sin i [km s-1] | 5 ± 1 | (h) | 3 ± 2 | (j) |
Notes.
(b)
mean of parameters used for spectroscopic [Fe/H] (see Table 3);
(e)
see Table 3;
(g)
heliocentric radial velocity from Famaey et al. (2005);
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