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Table 4

Oxygen diagnostics: percentage contributions from the different phases and total column density.

Phases 4U1254–69 4U 1636–54 4U 1735–44 Aql X–1 GS 1826–24 GX 339–4 GX 9+9 SAX J1808.4 Ser X-1

O i (dust)a 14 19 14 14 16 14 17 9 15
O i (gas)a 80 72 78 82 78 77 78 57 75
O ii-va 5 7 6 3 5 7 5 17 9
O vi-viiia 1 2 2 1 1 2 <1 17 1

O totb 2.10 2.59 2.79 3.31 2.93 4.53 1.66 1.37 3.72

Notes.

(a)

Column ratios are expressed in percentage.

(b)

Oxygen total column densities are in linear units of   (1022 m-2).

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