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Table 2

Fluxes of the R(6) 1000–0000 line at 3 μm and the total HCN emission between 13.7 and 14.1 for AS 205 (N) models with a constant or jump abundance compared to observations.

Abundance profile T jump G/D ratio x in x out 3 μm 14 μm Flux ratio
[K] [erg s-1 cm-2] 14 μm/3 μm

Constant 1000 3(8) 3(8) 3.3(15) 3.8(13) 115
Jump 200 1000 3(7) 1(9) 4.7(15) 2.4(13) 51
Jump 200 10 000 1(7) 1(10) 4.6(15) 2.3(13) 50
Jump 300 1000 6(7) 1(10) 6.0(15) 1.6(13) 27
Jump 300 10 000 6(7) 1(11) 4.4(15) 2.0(13) 45

Observed 4.7(15) 2.2(13) 46

Notes. a(b) means a × 10b.

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