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Table 8

Stellar properties and 1σ uncertainties derived from modeling HD 122563 (no atomic diffusion) and Gmb 1830 (with atomic diffusion).

HD 122563 Gmb 1830
Property EFF EOS CEFF EOS OPAL EOS

M (M) 0.855  ±  0.025 0.635  ±  0.025 0.625  ±  0.015 0.620  ±  0.020
Yi 0.245  ±  0.015 0.235  ±  0.025 0.230  ±  0.020 0.235  ±  0.025
Zi/Xi 0.00010  ±  0.00002 0.0016  ±  0.0004 0.0016  ±  0.0004 0.0016  ±  0.0004
α 1.31  ±  0.08 0.68  ±  0.10 0.63  ±  0.08 0.65  ±  0.10
Age (Gyr) 12.6  ±  0.1 12.1  ±  0.2 12.7  ±  0.3 12.3  ±  0.3
R (R) 24.1  ±  1.1 0.665  ±  0.014 0.665  ±  0.015 0.665  ±  0.015
L (L) 230  ±  7 0.213  ±  0.002 0.213  ±  0.002 0.213  ±  0.002
Teff (K) 4598  ±  42 4815  ±  52 4814  ±  53 4815  ±  50
log g (dex) 1.60  ±  0.04 4.60  ±  0.02 4.59  ±  0.02 4.58  ±  0.02
 [Z/Xs –2.38  ±  0.10 –1.32  ±  0.11 –1.32  ±  0.11 –1.33  ±  0.11
 ⟨ Δν ⟩ preda (μHz) 1.06  ±  0.06 198  ±  6 197  ±  7 196  ±  6
νmaxpreda (μHz) 5.16  ±  0.38 4886  ±  190 4809  ±  199 4768  ±  188

Notes. The first five values are the input parameters of the model and the other values are properties of these models. The uncertainties are derived by perturbing each of the model parameters individually until the edge of the error box is reached.

(a)

 ⟨ Δν ⟩  and νmax are the predicted seismic quantities according to the scaling relations from Brown & Gilliland (1994); Kjeldsen & Bedding (1995), and the range of values listed consider all the uncertainties in the five model parameters.

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