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Table 1
Stellar parameters for the stars analyzed in the present paper.
| Parameter | β Cnc | μ Leo | β UMi | Reference | |
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| Spectral type | K4 III | K2 III | K4 IIIvar | Hipparcos (ESA 1997) | |
| mv | [mag] | 3.52 | 3.88 | 2.08 | Hipparcos (ESA 1997) |
| B - V | [mag] | 1.481 ± 0.006 | 1.222 | 1.465 ± 0.005 | van Leeuwen (2007) |
| age | [Gyr] | 1.85 ± 0.34 | 3.35 ± 0.70 | 2.95 ± 1.03 | Deriveda |
| d | [pc] | 90.0 ± 7.7 | 40.9 ± 1.3 | 38.7 ± 0.8 | Famaey (2005) |
| 92.99 ± 1.7 | 38.05 ± 0.23 | 40.14 ± 0.2 | Anderson & Francis (2012) | ||
| RV | [km s-1] | 22.6 ± 0.2 | 13.6 ± 0.2 | 16.9 ± 0.3 | Gontcharov (2006) |
| π | [mas] | 10.75 ± 0.19 | 26.28 ± 0.16 | 24.91 ± 0.12 | van Leeuwen (2007) |
| Teff | [K] | 3990 ± 20 | 4436 ± 4 | – | Massarotti et al. (2008) |
| 4150 | 4660 | 4150 | Lafrasse et al. (2010) | ||
| – | 4453 ± 19 | 4067 ± 13 | Wu et al. (2011) | ||
| 4092.1 ± 17.5 | 4538.2 ± 27.5 | 4126.0 ± 25.0 | This work | ||
| [Fe/H] | [dex] | – | 0.30 ± 0.04 | – 0.13 ± 0.05 | Wu et al. (2011) |
| – 0.17 | 0.25 ± 0.02 | – 0.17 | Anderson & Francis (2012) | ||
| – 0.29 ± 0.06 | 0.36 ± 0.05 | – 0.27 ± 0.07 | This work | ||
| log g | [cgs] | 1.9 | 2.1 | 1.9 | Lafrasse et al. (2010) |
| – | 2.61 ± 0.08 | 1.70 ± 0.11 | Wu et al. (2011) | ||
| 1.4 ± 0.1 | 2.4 ± 0.1 | 1.5 ± 0.1 | This work | ||
| 1.28 ± 0.04 | 2.47 ± 0.04 | 1.39 ± 0.06 | Deriveda | ||
| vmicro | [km s-1] | 1.8 ± 0.1 | 1.4 ± 0.1 | 1.7 ± 0.1 | This work |
| R⋆ | [R⊙] | – | 16.2 | – | Rutten (1987) |
| 48.96 ± 4.23 | – | 42.06 ± 0.91 | Piau et al. (2011) | ||
| 47.2 ± 1.3 | 11.4 ± 0.2 | 38.3 ± 1.1 | Deriveda | ||
| M⋆ | [M⊙] | 1.7 ± 0.1 | 1.5 ± 0.1 | 1.4 ± 0.2 | Deriveda |
| L⋆ | [L⊙] | 785.7 | 62.62 | 537.07 | Anderson & Francis (2012) |
| vrot sin i | [km s-1] | 2.1 | 1.2 | 1.7 | de Medeiros & Mayor (1999) |
| 3.7 ± 0.8 | 2.4 ± 0.5 | 1.7 ± 1.4 | Głȩbocki & Gnaciński (2005) | ||
| 4.88 | 5.06 | – | Hekker & Meléndez (2007) | ||
| 6.9 | 4.5 | – | Massarotti et al. (2008) | ||
log  |
– | – | – 4.68 | Cornide et al. (1992) | |
| Prot/sin i | [days] | – | 268 | – | Rutten (1987) |
| 346–1137 | 114–480 | 625–6457 | Derivedb | ||
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