Table 2: Parameters and results for the binary system + uniform disk circumstellar envelope obtained for $\delta$ Cen. Note that there is a 180 $^\circ$ ambiguity in the position angle since the AMBER closure phase data reduction process is not fully validated.
Distance 121 $\pm$ 11 pc

$T_{\rm eff}$ 21 000 $\pm$ 1000 K

Stellar radius 5.9 $\pm$ 0.5 $R_{\odot}$

$\log g$ 3.75 $\pm$ 0.25

Companion flux (K band) 0.07 $\pm$ 0.0.1 $F_{\rm tot}$

Separation 68.7 $\pm$ 0.5 mas

Position Angle (PA) 117.5 $\pm$ 0.5 $\hbox{$^\circ$ }$

Envelope flux (K band) 0.52 $\pm$ 0.06 $F_{\rm tot}$

Envelope diameter (K band) 1.6 $\pm$ 0.4 mas

**Table 2:** Parameters and results for the binary system + uniform disk circumstellar envelope obtained for $\delta$ Cen. Note that there is a 180 $^\circ$ ambiguity in the position angle since the AMBER closure phase data reduction process is not fully validated.
Distance	121 $\pm$ 11 pc
$T_{\rm eff}$	21 000 $\pm$ 1000 K
Stellar radius	5.9 $\pm$ 0.5 $R_{\odot}$
$\log g$	3.75 $\pm$ 0.25
Companion flux (K band)	0.07 $\pm$ 0.0.1 $F_{\rm tot}$
Separation	68.7 $\pm$ 0.5 mas
Position Angle (PA)	117.5 $\pm$ 0.5 $\hbox{$^\circ$ }$
Envelope flux (K band)	0.52 $\pm$ 0.06 $F_{\rm tot}$
Envelope diameter (K band)	1.6 $\pm$ 0.4 mas

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