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Table 3

Best-fit parameters of the pion photoionisation model components fitted to the stacked Chandra HETGS spectrum of NGC 7469 as described in Sect. 4.

Ionisation log   ξ NH vout Ω ∕ 4π EM Δ C-stat
component (erg cm s−1) (1021 cm−2) (km s-1) (1064 cm−3)
A 1.90 ± 0.05 0.7 ± 0.1 − 540 ± 40 303
B 2.40 ± 0.03 1.8 ± 0.2 − 460 ± 10 584
C 2.79 ± 0.03 1.7 ± 0.2 − 700 ± 30, − 1080 ± 60, − 1830 ± 100 291
D 3.28 ± 0.04 2.3 ± 0.7 − 370 ± 30 49
E 0.9 ± 0.4 26 ± 12 − 220 ± 50 0.006 ± 0.002 5.7 37
F 2.2 ± 0.1 120 ± 45 0 (f) 0.005 ± 0.002 1.0 79

C-stat / d.o.f. = 2485 / 2409 (MEG) and 2656 / 2609 (HEG)

Notes. Ionisation components A to D are the absorption components of the AGN wind, and E and F the emission components. For the absorption components (Comps. A to D), the turbulent velocity σv is 42 ± 10 km s-1. For the photoionised emission components, σv is 35 ± 20 km s-1 (Comp. E) and 590 ± 180 km s-1 (Comp. F). In Comp. C, 72% of the column density is present in the slowest sub-component, and 14% in each of the other two sub-components.

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