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Table 1

Input parameters for the MCMax models and best-fit values found in Sects. 4.2 and 5.1.

Parameter Value(s) Best 1 Best 2 Best alt.

System d (kpc) 1.5
i (°) 13.5

Stellar Teff (K) 6550
R (R21) 71.0
L (L) 8350
M ( M) 1.0

Dust Mdust ( M) 10-5–10-2 5 × 10-4 5 × 10-4 1 × 10-4
q 2.5; 3.0; 3.25; 3.5 3.0 3.0 3.25
amin (μm) 0.01
amax (μm) 104
gas/dust 100
cont. opacity Fe/C Fe Fe C

Structure 1 Rin (AU) 3–10 4.5
Rout (AU) 50; 100; 150; 300 50
p 0.5; 1.0; 1.5; 2.0 0.5

Structure 2 Rin (AU) 3.75; 4.00; 4.25; 4.50; 4.75 3.75 3.75
Rout (AU) 50
Rmid/Rin 1.25; 1.5; 2.0; 2.5; 3.0; 3.5; 4.0 3.0 4.0
pin –2.0; –1.0; –0.5; 0.0; 1.0 –2.0 –1.0
pout 1.5 1.5 1.0

χ2(/min) SEDOPT 135(1.7) 157(1.7) 161(1.2)
SEDNIR 14.5(9.3) 2.0(1.3) 2.6(2.8)
SEDIR 28.6(7.6) 3.3(3.2) 4.4(3.9)
VISOPT 5.1(1.6) 9.6(2.8) 12.1(2.0)
VISH 22.5(1.5) 28.5(2.8) 22.5(2.5)
VISK 21.0(3.3) 8.4(2.0) 8.0(2.3)
VISMIDIa 2.6(2.0) 2.8(1.2) 3.5(1.5)

Notes. The χ2 also list between brackets the relative value with respect to the minimum of the corresponding grid.

(a)

Limited to the 8.0–9.0 μm continuum wavelength range.

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