All Tables

Table 1: The acoustic radius of the star (T) and of the BCZ ( $t_{\rm BCZ}$ ) are given for different stellar models (see Sect. 3.1 for more details) as well as their ratio $t_{\rm BCZ}/T$ . For each model, one gives the results of BCZ extraction, from a limited frequency set ( $\ell =0$ -2 and n=14-26), with two techniques: (1) the spectral analysis of ${\delta _2\nu }$ ; (2) the fit of Eq. (5) (cf. Sect. 3.2). For each techniques one gives the extracted BCZ acoustic radius ( $\tilde{t}_{\rm BCZ}$ ) with its uncertainty ( $\sigma_{\tilde{t}}/T$ ) and the relative error made $(\tilde{t}_{\rm BCZ}-{t}_{\rm BCZ})/T$ . For the first method, the error bar is deduced from the HWHM ( $\sigma_{\tilde{t}} \equiv\sigma^{\rm sp}_{\tilde{t}}$ ); for the second one, the error is provided by the method of least-squares fit ( $\sigma_{\tilde{t}} \equiv\sigma^{\rm fit}_{\tilde{t}}$ ).
Table 2: For each simulated observational length ( $T_{\rm obs}$ ) one indicates the frequency error bars used ( $\sigma _\nu$ ), the success rate of $\tilde{t}_{\rm BCZ}$ extraction (SR) and the dispersion of good extractions $\sigma^{\rm obs}_{\tilde{t}}/T$ .