Table 2: Fundamental parameters for two limit solution models of Achernar. From the fixed parameters and in the Roche approximation, the minimum polar inclination is $i_{\min} = 46\hbox{$^\circ$ }$ where $V_{\rm eq}=V_{\rm crit}=311$ km s-1 and $R_{\rm eq}=1.5~R_{\rm pol}$. In addition to these parameters we adopted a linear limb darkening coefficient from Claret (2000) compatible with the variable effective temperature and gravity over the stellar surface. The equatorial effective temperature is much lower than the polar one due to the von Zeipel effect.

Fixed parameters		 Adopted value Comments
$T_{\rm pol}$ 20 000 K $\sim$B3V star
Mass 6.07 $M_{\odot}$ Harmanec (1988)
$V_{\rm eq} \sin i$ 225 km s-1 Slettebak (1982)
$R_{\rm eq}$ 12.0 $R_{\odot}$ this work

Model dependent		 Values for Values for
parameters Model A Model B
$T_{\rm eq}$ 9500 K 14 800 K
i $50\hbox{$^\circ$ }$ $90\hbox{$^\circ$ }$
$V_{\rm crit} $ 304 km s-1 285 km s-1
$V_{\rm eq} $ $0.96 V_{\rm crit}$ $0.79 V_{\rm crit}$
$R_{\rm pol}$ 8.3 $R_{\odot}$ 9.5 $R_{\odot}$


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