Table A.1.
Atomic model used to construct the OB-type model grids.
| Ion | Number of levels | Number of linesa | Ion | Number of levels | Number of linesa |
|---|---|---|---|---|---|
| H I | 22 | 231 | S V | 10 | 8 |
| H II | 1 | 0 | S VI | 1 | 0 |
| He I | 35 | 271 | Mg I | 1 | 0 |
| He II | 26 | 325 | Mg II | 32 | 120 |
| He III | 1 | 0 | Mg III | 43 | 158 |
| N I | 10 | 13 | Mg IV | 17 | 27 |
| N II | 38 | 201 | Mg V | 20 | 25 |
| N IIIb | 56 85 | 219 464 | Si Ib | 20 | 43 45 |
| N IV | 38 | 154 | Si II | 20 | 35 |
| N V | 20 | 114 | Si III | 24 | 68 |
| N VI | 14 | 48 | Si IV | 23 | 72 |
| C I | 15 | 30 | Si V | 1 | 0 |
| C II | 32 | 148 | P IV | 12 | 16 |
| C III | 40 | 226 | P V | 11 | 22 |
| C IV | 25 | 230 | P VI | 1 | 0 |
| C V | 29 | 120 | G Ic | 1 | 0 |
| C VI | 1 | 0 | G IIc | 3 | 2 |
| O I | 13 | 15 | G IIIc | 13 | 40 |
| O II | 37 | 150 | G IVc | 18 | 77 |
| O III | 33 | 121 | G Vc | 22 | 107 |
| O IV | 29 | 76 | G VIc | 29 | 194 |
| O V | 36 | 153 | G VIc | 29 | 194 |
| O VI | 16 | 101 | G VIIc | 19 | 87 |
| O VII | 15 | 64 | G VIIIc | 14 | 49 |
| S III | 23 | 38 | G IXc | 15 | 56 |
| S IV | 11 | 13 |
Notes.(a)Number of lines accounted for during the comoving-frame calculations. (b)For those quantities where two values are given, the second one refers to the Galactic OB-star grid, while the first one is valid for all other grids. (c)G denotes a generic atom which incorporates the following iron group elements: Sc, Ti, V, Cr, Mn, Fe, Co, and Ni. The corresponding ions are treated by means of a superlevel approach (for details see Gräfener et al. 2002).
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