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Table 2

Model properties.

Model > 5 aua > 35 aua 1 × 1 aub 5 × 5 aub 10 × 10 au
npeak,O [cm-3]c 2.7 × 105 2.9 × 104 5.8 × 106 1.9 × 104 2.6 × 104
npeak,C [cm-3]c 1.9 × 103 520 1.7 × 107 3.7 × 104 1.1 × 104
npeak,e [cm-3]c 1700 320 9.2 × 104 2200 1100
Tpeak [K]c 54 50 870 104 76
C/Od 0.007 0.018 3.0 1.9 0.43
O mass [ M⊕ ] 1.052 0.415 0.052 0.004 0.023
C mass [ M⊕ ] 0.005 0.006 0.118 0.006 0.008
F obs,O / F mod,O e 51 43 1.0 2.5 6.5
NO i [cm-2 ]f 1.0 × 1020 2.1 × 1019 9.2 × 1019 1.6 × 1018 4.1 × 1018
NC i [cm-2 ]f 2.3 × 1017 1.8 × 1017 2.8 × 1020 2.7 × 1018 1.6 × 1018
NC ii [cm-2 ]f 4.7 × 1017 2.0 × 1017 1.5 × 1018 2.3 × 1017 2.3 × 1017

Notes.

(a)

Models with a spatial distribution according to Nilsson et al. (2012); see Sect. 3.2.

(b)

Models with a torus-like spatial distribution; see Sect. 3.2.

(c)

The quantity measured at peak gas density; for the Nilsson et al. (2012) profiles this corresponds to the inner edge; for the tori models the maximum is located in the midplane at 85 au.

(d)

The solar C/O is 0.5 and for carbonaceous meteoroids 0.1 (Lodders 2003).

(e)

The ratio between the observed and modelled flux in [O i] 63 μm.

(f)

The column density in the midplane against the star.

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