Properties of the individual knots derived from tailored photoionization models compared with the observed values.
| NGC 6789-A | NGC 6789-B | NGC 6789-C | NGC 6789-D | NGC 6789-E | ||||||
| Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | |
| log L(Hα) (erg s−1) | 37.32 | 37.23 ± 0.02 | 37.34 | 37.34 ± 0.02 | 37.51 | 37.50 ± 0.03 | 37.18 | 37.17 ± 0.02 | 37.03 | 37.02 ± 0.01 |
| Radius (pc) | 7 | 30 | 33 | 34 | 22 | 37 | 10 | 36 | 5 | 21 |
| FUV–NUV (mag) | 0.17 | 0.14 ± 0.16 | 0.28 | 0.28 ± 0.19 | 0.30 | 0.31 ± 0.22 | 0.22 | 0.03 ± 0.18 | 0.10 | 0.06 ± 0.04 |
| I([O ii]/I(Hβ) | 2.30 | 2.34 ± 0.15 | 3.33 | 3.16 ± 0.20 | 2.35 | 2.51 ± 0.16 | 3.05 | 3.14 ± 0.20 | 1.09 | 1.06 ± 0.04 |
| I([O iii]/I(Hβ) | 3.82 | 3.76 ± 0.17 | 1.47 | 1.48 ± 0.07 | 3.45 | 3.44 ± 0.15 | 1.72 | 1.73 ± 0.08 | 2.30 | 2.26 ± 0.20 |
| 12+log(O/H) | 7.93 | 7.84 ± 0.04 | 7.82 | 7.93 ± 0.10 | 7.79 | 7.81 ± 0.05 | 7.77 | 7.90 ± 0.12 | 7.64 | 7.80 ± 0.18 |
| −EW(Hβ (Å) | 21 | 23 | 30 | 30 | 48 | 49 | 29 | 24 | 80 | 84 |
| Age (Myr) | 5.4 | – | 4.2 | – | 3.5 | – | 5.2 | – | 3.9 | – |
| Dust-to-gas ratio | 0.026 | – | 0.34 | – | 0.12 | – | 0.15 | – | 0.015 | – |
| Abs. factor (fd) | 5.34 | – | 7.28 | – | 8.21 | – | 4.37 | – | 2.23 | – |
| NGC 6789-A | NGC 6789-B | NGC 6789-C | NGC 6789-D | NGC 6789-E | ||||||
| Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | |
| log L(Hα) (erg s−1) | 37.32 | 37.23 ± 0.02 | 37.34 | 37.34 ± 0.02 | 37.51 | 37.50 ± 0.03 | 37.18 | 37.17 ± 0.02 | 37.03 | 37.02 ± 0.01 |
| Radius (pc) | 7 | 30 | 33 | 34 | 22 | 37 | 10 | 36 | 5 | 21 |
| FUV–NUV (mag) | 0.17 | 0.14 ± 0.16 | 0.28 | 0.28 ± 0.19 | 0.30 | 0.31 ± 0.22 | 0.22 | 0.03 ± 0.18 | 0.10 | 0.06 ± 0.04 |
| I([O ii]/I(Hβ) | 2.30 | 2.34 ± 0.15 | 3.33 | 3.16 ± 0.20 | 2.35 | 2.51 ± 0.16 | 3.05 | 3.14 ± 0.20 | 1.09 | 1.06 ± 0.04 |
| I([O iii]/I(Hβ) | 3.82 | 3.76 ± 0.17 | 1.47 | 1.48 ± 0.07 | 3.45 | 3.44 ± 0.15 | 1.72 | 1.73 ± 0.08 | 2.30 | 2.26 ± 0.20 |
| 12+log(O/H) | 7.93 | 7.84 ± 0.04 | 7.82 | 7.93 ± 0.10 | 7.79 | 7.81 ± 0.05 | 7.77 | 7.90 ± 0.12 | 7.64 | 7.80 ± 0.18 |
| −EW(Hβ (Å) | 21 | 23 | 30 | 30 | 48 | 49 | 29 | 24 | 80 | 84 |
| Age (Myr) | 5.4 | – | 4.2 | – | 3.5 | – | 5.2 | – | 3.9 | – |
| Dust-to-gas ratio | 0.026 | – | 0.34 | – | 0.12 | – | 0.15 | – | 0.015 | – |
| Abs. factor (fd) | 5.34 | – | 7.28 | – | 8.21 | – | 4.37 | – | 2.23 | – |
Properties of the individual knots derived from tailored photoionization models compared with the observed values.
| NGC 6789-A | NGC 6789-B | NGC 6789-C | NGC 6789-D | NGC 6789-E | ||||||
| Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | |
| log L(Hα) (erg s−1) | 37.32 | 37.23 ± 0.02 | 37.34 | 37.34 ± 0.02 | 37.51 | 37.50 ± 0.03 | 37.18 | 37.17 ± 0.02 | 37.03 | 37.02 ± 0.01 |
| Radius (pc) | 7 | 30 | 33 | 34 | 22 | 37 | 10 | 36 | 5 | 21 |
| FUV–NUV (mag) | 0.17 | 0.14 ± 0.16 | 0.28 | 0.28 ± 0.19 | 0.30 | 0.31 ± 0.22 | 0.22 | 0.03 ± 0.18 | 0.10 | 0.06 ± 0.04 |
| I([O ii]/I(Hβ) | 2.30 | 2.34 ± 0.15 | 3.33 | 3.16 ± 0.20 | 2.35 | 2.51 ± 0.16 | 3.05 | 3.14 ± 0.20 | 1.09 | 1.06 ± 0.04 |
| I([O iii]/I(Hβ) | 3.82 | 3.76 ± 0.17 | 1.47 | 1.48 ± 0.07 | 3.45 | 3.44 ± 0.15 | 1.72 | 1.73 ± 0.08 | 2.30 | 2.26 ± 0.20 |
| 12+log(O/H) | 7.93 | 7.84 ± 0.04 | 7.82 | 7.93 ± 0.10 | 7.79 | 7.81 ± 0.05 | 7.77 | 7.90 ± 0.12 | 7.64 | 7.80 ± 0.18 |
| −EW(Hβ (Å) | 21 | 23 | 30 | 30 | 48 | 49 | 29 | 24 | 80 | 84 |
| Age (Myr) | 5.4 | – | 4.2 | – | 3.5 | – | 5.2 | – | 3.9 | – |
| Dust-to-gas ratio | 0.026 | – | 0.34 | – | 0.12 | – | 0.15 | – | 0.015 | – |
| Abs. factor (fd) | 5.34 | – | 7.28 | – | 8.21 | – | 4.37 | – | 2.23 | – |
| NGC 6789-A | NGC 6789-B | NGC 6789-C | NGC 6789-D | NGC 6789-E | ||||||
| Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | Mod. | Obs. | |
| log L(Hα) (erg s−1) | 37.32 | 37.23 ± 0.02 | 37.34 | 37.34 ± 0.02 | 37.51 | 37.50 ± 0.03 | 37.18 | 37.17 ± 0.02 | 37.03 | 37.02 ± 0.01 |
| Radius (pc) | 7 | 30 | 33 | 34 | 22 | 37 | 10 | 36 | 5 | 21 |
| FUV–NUV (mag) | 0.17 | 0.14 ± 0.16 | 0.28 | 0.28 ± 0.19 | 0.30 | 0.31 ± 0.22 | 0.22 | 0.03 ± 0.18 | 0.10 | 0.06 ± 0.04 |
| I([O ii]/I(Hβ) | 2.30 | 2.34 ± 0.15 | 3.33 | 3.16 ± 0.20 | 2.35 | 2.51 ± 0.16 | 3.05 | 3.14 ± 0.20 | 1.09 | 1.06 ± 0.04 |
| I([O iii]/I(Hβ) | 3.82 | 3.76 ± 0.17 | 1.47 | 1.48 ± 0.07 | 3.45 | 3.44 ± 0.15 | 1.72 | 1.73 ± 0.08 | 2.30 | 2.26 ± 0.20 |
| 12+log(O/H) | 7.93 | 7.84 ± 0.04 | 7.82 | 7.93 ± 0.10 | 7.79 | 7.81 ± 0.05 | 7.77 | 7.90 ± 0.12 | 7.64 | 7.80 ± 0.18 |
| −EW(Hβ (Å) | 21 | 23 | 30 | 30 | 48 | 49 | 29 | 24 | 80 | 84 |
| Age (Myr) | 5.4 | – | 4.2 | – | 3.5 | – | 5.2 | – | 3.9 | – |
| Dust-to-gas ratio | 0.026 | – | 0.34 | – | 0.12 | – | 0.15 | – | 0.015 | – |
| Abs. factor (fd) | 5.34 | – | 7.28 | – | 8.21 | – | 4.37 | – | 2.23 | – |
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