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Table 3

RGS fits with the complete ISM model.

Parameter 4U1254–690 4U 1636–536 4U 1735–444 Aql X–1 GS 1826–238 GX 339–4 GX 9+9 SAX J1808.4–3658 Ser X-1
NH   (10  25 m-2) 2.69 ± 0.03 3.58 ± 0.07 3.28 ± 0.08 5.21 ± 0.05 4.14 ± 0.06 5.1 ± 0.4 2.15 ± 0.05 1.40 ± 0.03 5.0 ± 0.3
O/Ha 0.92 ± 0.04 0.85 ± 0.10 0.93 ± 0.03 0.88 ± 0.02 0.92 ± 0.04 1.06 ± 0.05 0.99 ± 0.03 0.91 ± 0.03 0.9 ± 0.1
Ne/Ha 0.91 ± 0.03 1.31 ± 0.05 1.00 ± 0.05 0.95 ± 0.07 1.23 ± 0.05 1.05 ± 0.05 1.35 ± 0.07 1.37 ± 0.05 1.20 ± 0.05
Mg/Ha 1.7 <0.8 2.0 1.0 1.4 0.4 <0.2 0.9
Fe/Ha 0.16 0.18 ± 0.04 0.25 ± 0.10 0.11 ± 0.05 0.22 ± 0.06 0.4 ± 0.1 0.19 ± 0.05 <0.1 0.50 ± 0.05
O iib 0.33 ± 0.15 1.4 ± 0.7 0.6 ± 0.2 0.2 ± 0.1 0.6 ± 0.1 1.4 ± 0.5 0.3 ± 0.1 1.67 ± 0.05 2.0 ± 0.2
O iiib 0.08 <0.1 0.2 ± 0.1 <0.3 <0.3 <0.8 <0.05 0.34 ± 0.05 <0.4
O ivb 0.5 ± 0.2 0.3 ± 0.2 0.4 ± 0.2 0.4 ± 0.1 0.6 ± 0.2 0.5 ± 0.1 0.4 ± 0.2 0.31 ± 0.03 0.7 ± 0.5
O vb <0.04 <0.02 <0.1 <0.03 <0.06 <0.01 <0.002 0.006 ± 0.002 0.3 ± 0.2
Ne iib 0.11 ± 0.06 1.2 ± 0.3 0.4 ± 0.2 0.7 ± 0.2 1.4 ± 0.3 1.2 ± 0.5 0.4 ± 0.2 1.3 ± 0.1 0.3 ± 0.2
Ne iiib 0.19 ± 0.08 0.9 ± 0.2 0.5 ± 0.2 0.6 ± 0.2 0.6 ± 0.3 0.9 ± 0.2 0.2 ± 0.1 1.1 ± 0.1 0.8 ± 0.4
O vib <0.03 <0.06 <0.01 <0.06 <0.07 <0.04 <0.004 0.02 ± 0.01 <0.05
O viib 0.10 ± 0.05 0.20 ± 0.07 0.2 ± 0.1 0.15 ± 0.06 0.15 ± 0.06 0.4 ± 0.1 0.04 ± 0.02 2.2 ± 0.5 0.24 ± 0.05
O viiib 0.09 ± 0.04 0.19 ± 0.05 0.3 ± 0.1 0.10 ± 0.04 0.10 ± 0.03 0.3 ± 0.1 <0.005 0.11 ± 0.02 0.20 ± 0.06
Ne viiib <0.03 0.07 ± 0.04 <0.05 <0.01 <0.01 0.06 ± 0.04 <0.004 <0.003 <0.03
Ne ixb 0.05 ± 0.03 0.09 ± 0.04 0.2 ± 0.1 0.07 ± 0.05 0.06 ± 0.02 0.16 ± 0.04 0.03 ± 0.02 0.05 ± 0.02 0.14 ± 0.05
Ne xb <0.04 <0.03 <0.02 <0.1 <0.02 <0.02 <0.006 <0.008 <0.04
Mg xib 0.16 ± 0.05 0.08 ± 0.04 0.4 ± 0.3 <0.05 <0.1 0.10 ± 0.05 0.06 ± 0.03 0.18 ± 0.09 <0.15
Mg xiib <0.01 <0.01 <0.01 <0.02 <0.02 <0.01 <0.005 <0.01 <0.03
Fe xviib <0.01 0.02 ± 0.01 0.02 ± 0.01 0.02 ± 0.01 0.02 ± 0.01 0.02 ± 0.01 0.008 ± 0.004 0.02 ± 0.01 <0.01
Fe xviiib <0.02 <0.01 <0.01 0.02 ± 0.01 <0.01 <0.01 <0.003 <0.04 <0.01
Water ice H2 Ob 2 ±    1 0.9 ± 0.5 3 ± 2 3 ± 1 3 ± 2 4.4 ± 2.5 2 ± 1 0.3 < 6.6
Andradite Ca3 Fe2 Si3 O12b 0.02 ± 0.01 0.02 ± 0.01 0.02 ± 0.01 0.03 ± 0.01 0.03 ± 0.01 0.03 ± 0.01 0.012 ± 0.004 0.008± 0.004 0.03 ± 0.01
Hercinite Fe Al2 O4b 0.04 ± 0.02 0.05 ± 0.02 0.04 ± 0.02 <0.025 0.06 ± 0.02 0.07 ± 0.02 0.03 ± 0.01 0.015± 0.007 0.07 ± 0.02
Lepidocrocite Fe O (OH)b 0.11 ± 0.06 0.4 ± 0.2 <0.2 0.6 ± 0.3 0.4 ± 0.2 0.03 ± 0.02 0.2 ± 0.1 0.15 ± 0.08 0.15 ± 0.10
Pyroxene Mg Si O3b <1.2 1.2 ± 0.5 <1.1 <1.2 <1.1 0.3 <1.0 <0.4 1.7 ± 0.5
Carbon monoxide COb <0.11 0.3 ± 0.2 <0.2 <0.1 <0.3 0.07 ± 0.05 <0.05 0.6 ± 0.1 <0.2
Metallic Feb 0.3 0.3 0.3 <0.7 <1.2 0.6 ± 0.1 0.3 0.13 ± 0.05 <0.7
Magnetite Fe3 O4b 0.03 ± 0.02 0.2 ± 0.1 <0.04 0.3 ± 0.2 0.3 ± 0.1 0.2 ± 0.1 <0.02 <0.005 0.2 ± 0.1
Olivine Mg1.6 Fe0.4 SiO4b <0.04 0.06 ± 0.03 <0.1 <0.04 <0.08 0.07 ± 0.03 0.2 ± 0.1 <0.03 <0.1
Laughing gas N2Ob 0.4 ± 0.3 <0.04 <0.1 <0.03 <0.2 <0.03 <0.03 0.03 ± 0.02 <0.04
Hematite Fe2 O3b <0.04 <0.01 <0.1 <0.02 <0.2 <0.003 <0.02 <0.01 <0.02
Iron sulfate Fe SO4b <0.04 <0.01 <0.05 <0.03 <0.01 <0.004 <0.04 <0.03 <0.02
Total oxygen in dustb 3 ± 1 7 ± 2 4 ± 1 6 ± 1 6 ± 1 7 ± 2 4 ± 1 1.5 ± 0.5 7 ± 2
Total iron in dustb 0.6 ± 0.2 1.3 ± 0.5 0.5 ± 0.3 1.7 ± 0.5 1.5 ± 0.6 1.4 ± 0.5 0.7 ± 0.2 0.3 ± 0.1 0.8 ± 0.4

Notes. The dust and the three gas phases are represented by the four main blocks.

(a)

Abundances ratios are in the linear proto-Solar abundance units of Lodders & Palme (2009).

(b)

Ionic and molecular column densities are in units of 10  21 m-2 (see also Sect. 4).

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