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Table 6.
Stellar properties of the components in the binary system α Dra determined from the combined spectroscopic and light curve analysis, and evolutionary calculations.
| Parameter | Unit | Primary | Secondary |
|---|---|---|---|
| M | [M⊙] | 3.186 ± 0.044 | 2.431 ± 0.019 |
| R | [R⊙] | 4.932 ± 0.036 | 2.326 ± 0.052 |
| log g | [dex] | 3.555 ± 0.006 | 4.090 ± 0.019 |
| Teff | [K] | 10 225 ± 100 | 9 930 ± 330 |
| log L | [L⊙] | 2.380 ± 0.018 | 1.677 ± 0.059 |
| Mbol | [mag] | −1.200 ± 0.045 | 0.557 ± 0.147 |
| v sin i | [km s−1] | 25.4 ± 0.9 | 168 ± 11 |
| Age | [Myr] | 280 ± 10 | 345 ± 25 |
| Mcc | [M⊙] | 0.01 ± 0.04 | 0.337 ± 0.011 |
| Xc | 0.00 ± 0.005 | 0.41 ± 0.03 | |
| fov | 0.007 ± 0.002 | 0.005 (*) |
Notes. (*)The secondary component is not sufficiently evolved to deduce its overshooting parameter from the Kiel or HRD diagram, hence fov is fixed to 0.005 Hp.
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