Table 5: Model parameters from Justtanont et al. (1996) (JU96), and the same model adapted to minimum light (the ISO data, JD = 2 450 368, phase 0.47) and maximum light (the MIDI data, JD = 2 452 804, phase 0.06), dust evaporation scenario).
Param. JU96 Minimum Maximum

$T_{\rm eff}$ (K) 2200 2200 2100

$R_{\star}$ ( $R_{\odot}$ ) 862 650 1100

Dist. (kpc) 1.37 1.37 1.37

Superwind

$R_{\rm {in}}$ ( $R_{\star}$ ) 7.5 7.5 20

$R_{\rm {out}}$ (cm) $8\times 10^{15}$ $8\times 10^{15}$ $8\times 10^{15}$

$\dot{M}$ ( $M_\odot$ /yr) $5.5 \times 10^{-4}$ $5.5 \times 10^{-4}$ $8.5 \times 10^{-4}$

AGB wind

$R_{\rm {in}}$ (cm) $8\times 10^{15}$ $8\times 10^{15}$ $8\times 10^{15}$

$R_{\rm {out}}$ (cm) $5 \times 10^{18}$ $5 \times 10^{18}$ $5 \times 10^{18}$

$\dot{M}$ ( $M_\odot$ /yr) $1. \times 10^{-6}$ $1.4 \times 10^{-5}$ $1.4 \times 10^{-5}$

**Table 5:** Model parameters from Justtanont et al. (1996) (JU96), and the same model adapted to minimum light (the ISO data, JD = 2 450 368, phase 0.47) and maximum light (the MIDI data, JD = 2 452 804, phase 0.06), dust evaporation scenario).
Param.	JU96	Minimum	Maximum
$T_{\rm eff}$ (K)	2200	2200	2100
$R_{\star}$ ( $R_{\odot}$ )	862	650	1100
Dist. (kpc)	1.37	1.37	1.37
Superwind
$R_{\rm {in}}$ ( $R_{\star}$ )	7.5	7.5	20
$R_{\rm {out}}$ (cm)	$8\times 10^{15}$	$8\times 10^{15}$	$8\times 10^{15}$
$\dot{M}$ ( $M_\odot$ /yr)	$5.5 \times 10^{-4}$	$5.5 \times 10^{-4}$	$8.5 \times 10^{-4}$
AGB wind
$R_{\rm {in}}$ (cm)	$8\times 10^{15}$	$8\times 10^{15}$	$8\times 10^{15}$
$R_{\rm {out}}$ (cm)	$5 \times 10^{18}$	$5 \times 10^{18}$	$5 \times 10^{18}$
$\dot{M}$ ( $M_\odot$ /yr)	$1. \times 10^{-6}$	$1.4 \times 10^{-5}$	$1.4 \times 10^{-5}$

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction
	3 Modelling the circumstellar environment
	4 Discussion
	5 Conclusion
	References