Table 4
Abundances and depletions.
| Source |  |
δX | AX |  |
AX∕A⊙ |
|---|---|---|---|---|---|
| (1017 cm−2) | (10−5 H−1) | (10−5 H−1) | |||
| Magnesium | |||||
| GRS 1758-258 | 7.7 ± 0.5 | >0.97 | 3.6 ± 0.3 | 3.6 ± 0.3 | 0.9 ± 0.1 |
| GRS 1915+105 | 20 ± 3 | 0.8 ± 0.1 | 4.0 ± 0.5 | 3.0 ± 0.2 | 1.0 ± 0.1 |
| GX 17+2 | 9.4 ± 2.2 | >0.97 | 4.3 ± 0.9 | 4.3 ± 0.9 | 1.0 ± 0.3 |
| GX 3+1 | 7.0 ± 0.1 | >0.99 | 3.7 ± 0.1 | 3.7 ± 0.1 | 0.9 ± 0.1 |
| GX 9+1 | 8.5 ± 3.5 | >0.90 | 5 ± 2 | 5 ± 2 | 1.3 ± 0.5 |
| H1743-322 | 9.6 ± 2.8 | >0.74 | 4 ± 1 | 3.0 ± 0.7 | 0.9 ± 0.3 |
| IGR J17091-3624 | 4.4 ± 0.2 | >0.96 | 3.6 ± 0.2 | 3.6 ± 0.2 | 0.9 ± 0.1 |
| LMC X-1 | 1.4 ± 0.3 | >0.99 | 0.8 ± 0.2 | 0.7 ± 0.2 | 0.20 ± 0.05 |
| Silicon | |||||
| GRS 1758-258 | 8.4 ± 0.8 | 0.98 ± 0.01 | 3.9 ± 0.4 | 3.8 ± 0.4 | 1.0 ± 0.1 |
| GRS 1915+105 | 22 ± 2 | 0.98 ± 0.01 | 4.2 ± 0.3 | 4.2 ± 0.3 | 1.1 ± 0.1 |
| GX 17+2 | 9.3 ± 2.0 | 0.98 ± 0.01 | 4.3 ± 0.9 | 4.2 ± 0.9 | 1.1 ± 0.2 |
| GX 3+1 | 8.7 ± 0.2 | 0.96 ± 0.01 | 4.5 ± 0.1 | 4.4 ± 0.1 | 1.2 ± 0.1 |
| GX 9+1 | 7.7 ± 2.3 | 0.96 ± 0.03 | 5 ± 1 | 5 ± 1 | 1.2 ± 0.4 |
| H1743-322 | 11 ± 3 | 0.97 ± 0.02 | 4 ± 1 | 4 ± 1 | 1.0 ± 0.3 |
| IGR J17091-3624 | 4.8 ± 0.3 | 0.98 ± 0.01 | 4.0 ± 0.3 | 3.9 ± 0.3 | 1.0 ± 0.1 |
| LMC X-1 | 0.9 ± 0.3 | >0.98 | 0.5 ± 0.1 | 0.5 ± 0.1 | 0.13 ± 0.04 |
Notes. The parameter
represents the total column density of the X element, δX its depletion from the gas phase, AX
the total abundance, and 
the abundance of the X element in dust. In Sect. 4.4 we provide for LMC X-1 the abundance ratios obtained assuming the Large Magellanic Cloud abundances listed in Table A.2.
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