Table 1
Stellar parameters for the six known eSB2 in the Kepler sample from dynamical modelling and asteroseismic scaling.
| KIC | 5786154a | 7037405b | 8410637c | 8430105a | 9540226c | 9970396b | MAD | |
|---|---|---|---|---|---|---|---|---|
| Teff | 4747 ± 100d | 4542 ± 91 | 4699 ± 91 | 4918 ± 91 | 4662 ± 91 | 4789 ± 91 | 92 K | |
| νmax | 29.84 ± 0.18 | 22.12 ± 0.13 | 46.87 ± 0.23 | 78.14 ± 0.91 | 27.73 ± 0.16 | 63.00 ± 0.26 | 0.7% | |
| Δνc | 3.513 ± 0.009 | 2.784 ± 0.010 | 4.648 ± 0.011 | 7.143 ± 0.029 | 3.196 ± 0.012 | 6.302 ± 0.010 | 0.3% | |
| Δνcor | 3.520 ± 0.011 | 2.726 ± 0.011 | 4.594 ± 0.005 | 7.225 ± 0.071 | 3.181 ± 0.011 | 6.289 ± 0.009 | 0.3% | |
| Δνas | 3.762 ± 0.041 | 3.000 ± 0.047 | 4.960 ± 0.025 | 7.908 ± 0.187 | 3.413 ± 0.042 | 6.504 ± 0.069 | 1.3% | |
| Dynamical modelling | ||||||||
| log g | 2.350 ± 0.029 | 2.214 ± 0.009 | 2.547 ± 0.006 | 2.788 ± 0.009 | 2.325 ± 0.015 | 2.699 ± 0.010 | 0.012 | |
| 0.71 ± 0.05 | 0.43 ± 0.01 | 1.20 ± 0.02 | 2.92 ± 0.07 | 0.57 ± 0.03 | 2.27 ± 0.07 | 3.6% | ||
| M | 1.06 ± 0.06 | 1.17 ± 0.02 | 1.47 ± 0.02 | 1.31 ± 0.02 | 1.39 ± 0.03 | 1.18 ± 0.02 | 2.2% | |
| R | 11.40 ± 0.20 | 14.00 ± 0.09 | 10.60 ± 0.05 | 7.65 ± 0.05 | 13.4 ± 0.2 | 8.04 ± 0.07 | 0.9% | |
| New non-linear asteroseismic scaling (input: Teff, νmax, and Δνcor) | ||||||||
| log g | 2.357 ± 0.007 | 2.216 ± 0.006 | 2.552 ± 0.006 | 2.786 ± 0.007 | 2.321 ± 0.006 | 2.686 ± 0.005 | 0.006 | 0.005 |
| 0.71 ± 0.01 | 0.43 ± 0.01 | 1.20 ± 0.01 | 2.94 ± 0.06 | 0.58 ± 0.01 | 2.23 ± 0.02 | 1.5% | 0.7% | |
| M | 1.13 ± 0.06 | 1.18 ± 0.07 | 1.53 ± 0.07 | 1.32 ± 0.07 | 1.32 ± 0.07 | 1.11 ± 0.05 | 5.2% | 4.2% |
| R | 11.70 ± 0.26 | 14.02 ± 0.31 | 10.84 ± 0.18 | 7.57 ± 0.20 | 13.15 ± 0.27 | 7.92 ± 0.12 | 2.1% | 1.4% |
Notes. The parameters M (mass), R (radius), and
(mean density) are in solar units (
in case of the
). The effective temperatures, Teff, are taken from the APOKASC catalogue, except for (d), which is taken from Gaulme et al. (2016). The peak frequency, νmax, and the large frequency separations Δνc (central), Δνcor (corrected from Eq. (6)), and Δνas (asymptotic), are in μHz. The last two columns give the statistics with
corresponding to the average uncertainty of the parameter and MAD being the mean absolute deviation of the relative difference between the dynamic and asteroseismic parameter. Dynamic parameters are taken from: (a) Gaulme et al. (2016); (b) Brogaard et al. (2018); (c)Themeßl et al. (2018).
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