Table 2
Receding velocities and fluxes of the different emission lines in the nebula, for all four pointings and both nights.
| Emission line | Pointing | Velocity (km/s) | Velocity difference (km/s) | Flux (10−18 erg s−1 cm−2 arcsec−2) | Width (km/s) | |
|---|---|---|---|---|---|---|
| D1 | D2 | D1 | ||||
| P1 | −27.9±2.0 | −29.1±1.2 | 1.72±0.28 | |||
| Hβ | P2 P3 |
−31.3±1.4 | −34.1 ±2.6 −25.3±2.7 |
9.0 ± 3.2 | 1.64±0.16 1.68±0.12 |
22.0±1.4 |
| P4 | −30.2±2.8 | 1.12±0.20 | ||||
| P1 | −6.9±4.7 | |||||
| [O III]4959 | P2 | −13.6±2.7 | 0.56±0.12 | |||
| P3 | ||||||
| P4 | ||||||
| P1 | −7.7±1.3 | −12.4±2.3 | 2.44±0.24 | |||
| [O III]5007 | P2 P3 |
−6.2±1.1 −11.6±1.4 |
−10.4±1.9 −10.7±2.8 |
5.4±1.9 | 2.04±0.16 1.88±0.16 |
21.9±1.0 |
| P4 | ||||||
| P1 | −20.1±1.9 | −19.7±2.2 | 1.64±0.08 | |||
| [N II]6583 | P2 | −29.4±1.6 | −27.1 ±2.7 | 1.64±0.12 | 27.8±1.5 | |
| P3 | ||||||
| P4 | −21.5±3.1 | 0.84±0.16 | ||||
| P1 | −20.2± 2.4 | −20.4± 2.9 | 1.32 ± 0.16 | |||
| [S II]6716 | P2 | −27.7± 2.5 | 1.44 ± 0.12 | |||
| P3 | ||||||
| P4 | −20.2± 2.4 | 1.12 ± 0.12 | 28.3± 2.1 | |||
| P1 | −19.4± 1.9 | −18.1± 3.7 | 0.96 ± 0.12 | |||
| [S II]6731 | P2 | −24.9± 1.6 | 1.00 ± 0.08 | |||
| P3 | ||||||
| P4 | −14.2± 3.9 | −13.11± 5.3 | 0.88 ± 0.16 | |||
| Sky line 5198 Å | 19.7 ± 0.546 | |||||
| Sky line 6554 Å | 19.10± 0.05 | |||||
| Sky line 6864 Å | 19.25 ± 0.12 | |||||
Notes. Missing values are due to lack of detection (except for P3 in the three reddest lines, where no observation was taken). Fluxes are computed integrating the best-fitting Gaussian profile to each line. Note that line fluxes in the second night are considered less reliable due to flux calibration issues and thus not shown (see Sect. 3.2.1). The velocities are presented in the barycentric reference system. The columns “Velocity difference” and “Width” show the median values of the nebula pointings (P1, P2, and P3, if available) for each specific emission line. The velocity difference reports the maximum range and the median uncertainty, while the width value shows the median width and the typical dispersion of the values.
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