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Table 3.

Fundamental parameters of an ESTER model that match the observational constraints on Altair derived by Bouchaud et al. (2020).

Parameters ESTER model
M (M) 1.863
Tpole (K) 8621
Teq (K) 6780
Rpole (R) 1.568
Req (R) 2.011
veq (km s−1) 313
Ωeqk) 0.744
ε 0.220
Z 0.0192
Xenv 0.739
Xcore 0.712

Notes. ε = 1 − Rpole/Req is the flattening, Z metallicity, and X the hydrogen mass fraction.

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