Multiwavelength campaign on Mrk 509 - IX. The Galactic foreground

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Table 6

Column densities comparison for LVC component E.

Par	Method 1^b	Method 2^c	Method 3^d

N i^a	19.5 ± 0.2	20.27 ± 0.06	20.44 ± 0.06
O i^a	21.1 ± 0.2	21.4 ± 0.1	21.05 ± 0.08
Mg ii^a	19.8 ± 0.1	<20.7	19.83 ± 0.05
Fe ii^a	19.3 ± 0.1	<19.8	19.00 ± 0.07
O vi^a	18.25 ± 0.03	18.9 ± 0.3	18.31 ± 0.08

Notes.

^(a)

The column densities N_X are in log (m^-2) units.

^(b)

Method 1 is the UV slab model in Table 1.

^(c)

Method 2 refers to the X-ray slab model in Table 4.

^(d)

Method 3 gives the predictions of the physical model (Table 5).

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