Table 3.
Properties of the blue-shifted velocity component for all high-excitation and coronal emission lines in the nuclear spectrum of NGC 6552.
| Line | λlab |
 |
log(ncrit) | Flux | FWHM | Vpeak | Vout |
|---|---|---|---|---|---|---|---|
| [μm] | [eV] | cm−3 | [%] | [km s−1] | [km s−1] | [km s−1] | |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
| [FeVIII] | 5.447 | 125.0 | 6.41 | 0.61 ± 0.04 | 637 ± 67 | −88 ± 19 | 629 ± 61 |
| [MgVII] | 5.503 | 186.5 | 6.53 | 0.77 ± 0.02 | 786 ± 37 | −36 ± 21 | 704 ± 25 |
| [MgV] | 5.610 | 109.2 | 6.60 | 0.67 ± 0.04 | 661 ± 22 | −167 ± 12 | 728 ± 22 |
| [NeVI] | 7.652 | 126.2 | 5.80 | 0.63 ± 0.03 | 579 ± 20 | −151 ± 10 | 642 ± 22 |
| [ArV] | 7.902 | 59.8 | 5.20 | 0.71 ± 0.07 | 579 ± 61 | −175 ± 21 | 666 ± 51 |
| [ArIII] | 8.991 | 27.6 | 5.28 | 0.67 ± 0.03 | 683 ± 21 | −151 ± 11 | 731 ± 19 |
| [FeVII] | 9.527 | 99.1 | 5.74 | 0.75 ± 0.02 | 980 ± 35 | −79 ± 17 | 911 ± 26 |
| [SIV] | 10.51 | 34.8 | 4.75 | 0.70 ± 0.01 | 742 ± 20 | −98 ± 7 | 727 ± 17 |
| [NeV] | 14.32 | 97.1 | 4.51 | 0.66 ± 0.04 | 606 ± 21 | −175 ± 13 | 689 ± 23 |
| [NeIII] | 15.56 | 41.0 | 5.32 | 0.57 ± 0.02 | 652 ± 23 | −117 ± 10 | 672 ± 19 |
| [OIV] | 25.89 | 54.9 | 4.00 | 0.59 ± 0.13 | 493 ± 102 | −165 ± 75 | 584 ± 25 |
Notes. Columns describe the: (1) name of each high-excitation and coronal emission line, (2) intrinsic wavelength from lab, (3) ionisation potential, (4) critical density, (5) percentage of flux in the blue-shifted component, (6) FWHM of the blue-shifted component, (7) velocity offset relative to the narrow component, and (8) the outflow maximal velocity. [NeV]24.32 μm line profile is affected by noise and fringes, and [FeVII]7.815 μm by a spike, both of them have been discarded from the characterisation of the blue-shifted velocity component.
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