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Table 1
Models that reproduce abundances calculated via collisional excited lines. The “W” and “S” are for well-mixed and selective wind prescription, respectively.
| Model | Mup | wind | Mgas | t | O/Ha | log (C/O) | log (N/O) | log (Ne/O) | log (S/O) | log (Cl/O) | log (Ar/O) | log (Fe/O) |
| (M⊙) | (108 M⊙) | (Gyr) | ||||||||||
|
|
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| M1C | 60 | – | 8.99 | 13.50 | 7.95 | –0.08 | –0.44 | –0.85 | –1.63 | –3.87 | –2.45 | –1.20 |
| 12.90 | 7.90 | –0.08 | –0.43 | –0.85 | –1.63 | –3.87 | –2.45 | –1.20 | ||||
| 7.50 | 7.68 | –0.09 | –0.39 | –0.84 | –1.63 | –3.89 | –2.44 | –1.21 | ||||
|
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| M2C | 60 | W | 2.08 | 13.50 | 8.32 | –0.15 | –0.63 | –0.88 | –1.65 | –3.81 | –2.47 | –1.20 |
| 12.90 | 8.25 | –0.14 | –0.61 | –0.88 | –1.65 | –3.81 | –2.46 | –1.20 | ||||
| 7.50 | 7.96 | –0.17 | –0.50 | –0.87 | –1.65 | –3.84 | –2.45 | –1.21 | ||||
|
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| M3C | 60 | W-S | 2.08 | 13.50 | 8.19 | –0.06 | –0.52 | –0.88 | –1.63 | –3.81 | –2.46 | –1.17 |
| 12.90 | 8.20 | –0.14 | –0.60 | –0.88 | –1.65 | –3.82 | –2.46 | –1.20 | ||||
| 7.50 | 7.96 | –0.17 | –0.50 | –0.87 | –1.65 | –3.84 | –2.45 | –1.21 | ||||
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| M4C | 40 | W | 2.08 | 13.50 | 8.13 | 0.04 | –0.40 | –0.87 | –1.45 | –3.64 | –2.27 | –1.00 |
| 12.90 | 8.05 | 0.05 | –0.37 | –0.87 | –1.45 | –3.64 | –2.27 | –1.01 | ||||
| 7.50 | 7.76 | 0.02 | –0.27 | –0.84 | –1.43 | –3.67 | –2.26 | –1.00 | ||||
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| Observational constraints | ||||||||||||
| H ii region, A stars | 1.98b ± 0.20 | 13.50 | 8.16c ± 0.04 | –1.61 ± 0.14 | –0.72 ± 0.06 | –1.61 ± 0.10 | –3.69d ± 0.06 | –2.20 ± 0.08 | –1.15e ± 0.20 | |||
| PN young | 12.90 ± 0.50 | 8.11 ± 0.10 | –0.77 ± 0.14 | –1.80 ± 0.20 | –2.26 ± 0.16 | |||||||
| PN old | 7.50 ± 3.00 | 7.72 ± 0.10 | –0.74 ± 0.16 | –1.62 ± 0.20 | –2.26 ± 0.16 | |||||||
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