Survival of a convective core in low-mass solar-like pulsator HD 203608

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Volume 514 (May 2010)

A&A, 514 (2010) A31

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Table 1:

Physical and seismic parameters of HD 203608.
	Observations	Model A	Model B
Observational constraints
$T_{\rm eff}$ (K)	6070 $\pm$ 100	6095	6068
$L/L_\odot$	1.39 $\pm$ 0.13	1.379	1.372
$[Z/X]_{\rm f}$ (dex)	$-0.5 \pm 0.1$	-0.560	-0.548
$\overline{\Delta\nu}~(\mu\rm Hz)$	120.3 $\pm$ 0.5	120.35	120.25
$a_1 ~ (\times10^{-3})$	$-5.6 \pm 2.8$	${\bf -2.4}$ $^{\star}$	-3.6
$b_1~(\mu$ Hz)	$0.96 \pm 0.67$	$\bf 2.85$ $^{\star}$	0.84
$a_2 ~ (\times10^{-3})$	$-3.8 \pm 4.2$	-3.1	-3.2
$b_2~(\mu$ Hz)	$6.36 \pm 0.93$	6.43	5.97
Free parameters
$Y_{\rm i}$	-	$0.25 \pm 0.01$	$0.26 \pm 0.01$
$[Z/X]_{\rm i}$ (dex)	-	$-0.42 \pm 0.05$	$-0.50 \pm$ 0.07
$M/M_\odot$	-	0.95 $\pm$ 0.11	0.94 $\pm$ 0.09
age (Gyr)	-	6.71 $\pm$ 0.75	6.72 $\pm$ 0.59
$\alpha_{\hbox{\rm\small ov}}$	-	$\alpha_{\hbox{\rm\small ov}}=0$ $^{\sharp}$	0.17 $\pm$ 0.03
$\chi^2$	-	9.1	0.8

Notes. Derived from the observations, from the best model without overshooting (model A), and from the best model with overshooting (model B). $^{(\star)}$ Quantities not fitted within 1- $\sigma$ error bars; $^{(\sharp)}$ parameter fixed in the optimization.

Source LaTeX | All tables | In the text

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