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Table 2

GX 339-4 spectral fits within 15 − 24 Å and relative Δ   χ2.

Parameter Δ   χ2 Parameter Δ   χ2 Parameter Δ   χ2

O ii 14 Metallic Fe 101 CO 1
O iii 163 H2 O ice 168 Fe O (OH) 1
O iv 20 Mg Si O3 4a N2O 0
O v 1 Fe3 O4 60 Fe2 O3 0
O vi 1 Ca3 Fe2 Si3 O12 3 Fe SO4 0
O vii 366 Fe Al2 O4 2
O viii 35 Mg1.6 Fe0.4 SiO4 2

Notes. The Δ   χ2 values refer to the sequential changes obtained by adding the parameters from top to bottom and from left to right: O ii, O iii, ..., O viii, Metallic Fe, ..., Fe SO4.

(a)

The Δ   χ2 given by pyroxene Mg Si O3 is small because its features are similar to those produced by H2 O ice (see also Fig. 7).

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