Open Access
Table 9
Inputs for NGC 6803 P-I model.
| Parameter | Value |
|
|
|
| Central star (K) | 90 000 |
| Surface gravity, log g (cgs unit) | 5.38 |
| Luminosity (L⊙) | 2400 (2900)* |
| Density, NH(cm-3) | 8800 |
| Inner radius, Rin (pc) | 0.015 |
| Outer radius, Rout (pc) | 0.033 (2 3)* |
|
|
|
| Input abundances | He: 0.115 C: 5.0(−4) N: 4.3(−4) O: 6.0(−4) Ne: 1.8(−4) |
| S: 2.5(−5) Cl: 2.5(−7) Ar: 4.0(−6) K: 1.6(−8) | |
|
|
|
| Fractional ionization | He C N O Ne S Cl Ar K |
| X+ | 0.963 0.052 0.046 0.042 0.011 0.011 0.049 0.001 0.018 |
| X2+ | 0.035 0.582 0.576 0.940 0.964 0.325 0.371 0.326 0.142 |
| X3+ | 0.362 0.377 0.018 0.025 0.488 0.428 0.658 0.840 |
| X4+ | 0.004 0.001 0.000 0.000 0.176 0.150 0.014 0.000 |
|
|
|
| ICF(X) | 1.030 1.059 1.608 1.000 1.011 2.976 1.252 1.002 1.191 |
Notes. X(−Y) means X × 10−Y. ICF(X) = 1/(X++X2+) for He. ICF(X): the ionization correction factors for the unobservable ionic stages of each element. ∗ see the text.
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