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Table 2

Minimum χ2 values and corresponding temperatures (K in brackets) for Si+f*Gr composite grain models fitting the average IRAS-LRS observed IR flux, the two stars IRAS 16340-4634, IRAS 17315-3414, and three volume fractions of inclusions viz. f = 0.1, 0.2, and 0.3.

Average observed
IRAS-LRS flux
(Si+f*Gr)

Inclusion fraction (f) N = 9640 25 896 14 440

0.1 0.00249(270) 0.00260(270) 0.00391(290)
0.2 0.00273(265) 0.00332(260) 0.00450(280)
0.3 0.00410(260) 0.00573(260) 0.00596(275)

IRAS-LRS
16340-4634 flux
(Si+f*Gr)

0.1 0.00256(210) 0.00156(210) 0.00241(220)
0.2 0.00191(210) 0.00165(210) 0.00164(220)
0.3 0.00148(210) 0.00156(210) 0.00151(215)

IRAS-LRS
17315-3414 flux
(Si+f*Gr)

0.1 0.00814(230) 0.00846(235) 0.00798(245)
0.2 0.00972(230) 0.01112(230) 0.00985(240)
0.3 0.01251(230) 0.01474(230) 0.01256(240)

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