Table 1
Chemical composition of the stellar wind (WR) and the nebular gas (PN) used for computing the hydrodynamical models and synthetic X-ray spectra in terms of mass fractions (Cols. 3 and 5) and (logarithmic) number fractions ϵ (Cols. 4 and 6), arranged by atomic number Z.
| Z | El. | WR | PN | ||
|---|---|---|---|---|---|
| Mass | Num. | Mass | Num. | ||
| 1 | H | 1.990(−02) | 12.00 | 6.841(−01) | 12.00 |
| 2 | He | 4.160(−01) | 12.72 | 2.979(−01) | 11.04 |
| 3 | Li | 5.931(−11) | 2.64 | 5.931(−11) | 1.10 |
| 4 | Be | 1.537(−10) | 2.94 | 1.537(−10) | 1.40 |
| 5 | B | 2.604(−09) | 4.09 | 2.604(−09) | 2.55 |
| 6 | C | 4.950(−01) | 12.30 | 6.328(−03) | 8.89 |
| 7 | N | 1.000(−05) | 7.56 | 2.334(−03) | 8.39 |
| 8 | O | 5.200(−02) | 11.22 | 4.851(−03) | 8.65 |
| 9 | F | 4.682(−07) | 6.10 | 4.682(−07) | 4.56 |
| 10 | Ne | 1.400(−02) | 10.55 | 1.402(−03) | 8.01 |
| 11 | Na | 3.336(−05) | 7.87 | 3.336(−05) | 6.33 |
| 12 | Mg | 6.272(−04) | 9.12 | 6.272(−04) | 7.58 |
| 13 | Al | 5.405(−05) | 8.01 | 5.405(−05) | 6.47 |
| 14 | Si | 6.764(−04) | 9.01 | 6.764(−04) | 7.55 |
| 15 | P | 5.925(−06) | 6.99 | 5.925(−06) | 5.45 |
| 16 | S | 2.386(−04) | 8.58 | 2.386(−04) | 7.04 |
| 17 | Cl | 5.028(−06) | 6.86 | 5.028(−06) | 5.32 |
| 18 | Ar | 7.820(−05) | 8.00 | 7.280(−05) | 6.46 |
| 19 | K | 3.498(−06) | 6.66 | 3.498(−06) | 5.12 |
| 20 | Ca | 6.232(−05) | 7.90 | 6.232(−05) | 6.36 |
| 21 | Sc | 4.513(−08) | 4.71 | 4.513(−08) | 3.17 |
| 22 | Ti | 3.403(−06) | 6.56 | 3.403(−06) | 5.02 |
| 23 | V | 3.458(−07) | 5.54 | 3.458(−07) | 4.00 |
| 24 | Cr | 1.651(−05) | 7.21 | 1.651(−05) | 5.67 |
| 25 | Mn | 9.153(−06) | 6.93 | 9.153(..06) | 5.39 |
| 26 | Fe | 1.200(−03) | 9.04 | 1.200(−03) | 7.50 |
| 27 | Co | 3.327(−06) | 6.46 | 3.327(−06) | 4.92 |
| 28 | Ni | 7.084(−05) | 7.79 | 7.084(−05) | 6.25 |
| 29 | Cu | 6.995(−07) | 5.75 | 6.995(−07) | 4.21 |
| 30 | Zn | 1.767(−06) | 6.14 | 1.767(−06) | 4.60 |
Notes. The sum of the mass fractions is normalised to unity, and the logarithmic number fractions are defined as ϵEL = 12 + log(NEl/NH), where NEl is the number density of the element in question. The nine elements considered in our hydrodynamical simulations are given in italics (Col. 2). The mean molecular weights are 1.33/0.63 (neutral/fully ionised) for the PN composition and 5.92/1.47 (neutral/fully ionised) for the WR composition. The corresponding effective electronic charges for complete ionisation are 1.26 (PN) and 4.37 (WR), respectively.
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