Note: This model grid, put online on 18.05.2026, replaces the previous version which, for reference, is still accessible by choosing "MW WNL-H50 (2016 version)" in the drop-down menu. In the 2026 version the treatment of the iron group elements has been improved to reduce a pronounced violation of the energy conservation. Now, (PoWR version from 19.02.2018) the emissivity scales over an iron superline according to a Boltzman factor with max(T(r),Teff) instead of always T(r).
However, for the following models a larger iron data file (doubled the
number of superlevels by bisecting each energy band) was used:
11-21 13-21
| Ion | No. of levels | |
|---|---|---|
| H I | 22 | |
| H II | 1 | |
| He I | 35 | |
| He II | 26 | |
| He III | 1 | |
| N I | 1 | 0 |
| N II | 38 | 1 |
| N III | 85 | |
| N IV | 38 | |
| N V | 20 | |
| N VI | 1 | |
| Ion | No. of levels | |
|---|---|---|
| C II | 3 | |
| C III | 40 | |
| C IV | 25 | |
| C V | 1 | |
| G II | 1 | 0 |
| G III | 13 | 1 |
| G IV | 18 | |
| G V | 22 | |
| G VI | 29 | |
| G VII | 19 | |
| Ion | No. of levels | |
|---|---|---|
| G VIII | 14 | |
| G IX | 15 | |
| G X | 1 | 28 |
| G XI | 0 | 26 |
| G XII | 0 | 13 |
| G XIII | 0 | 15 |
| G XIV | 0 | 14 |
| G XV | 0 | 10 |
| G XVI | 0 | 9 |
| G XVII | 0 | 1 |
Notes: Element "G" stands for the generic iron-group element, which combines the elements from Sc to Ni in solar relative mixture. In case of the "G" element, the number of levels given in the above table actually refers to superlevels.
If two entries are given for the same ion, the first one refers to the cooler and the second entry to the hotter part (T* of 79 kK and higher).
For a couple of lines, contour plots of the equivalent width have been prepared. The contours are labeled with Wλ in Angstroem:
| logQ | HII | ps | png | txt | |
| logQ | HeI | ps | png | txt | |
| logQ | HeII | ps | png | txt | |
| H | α | ps | png | ||
| H | β | ps | png | ||
| He I | 5876 | ps | png | ||
| He II | 5412 | ps | png | ||
| C IV | 5801-5812 | ps | png | ||
| N III | 4640 | ps | png | ||
| N IV | 4058 | ps | png | ||
| N V | 4604-4620 | ps | png | ||
| N V | 4933-4944 | ps | png |
The following contour plot relates the stellar temperature T, which refers to the hydrostatic radius, to the "effective" temperature T2/3 referring to the radius of the optical depth 2/3. The contours are labeled with log T2/3 in Kelvin.
| ps | png | txt |
Parameters of the grid models: parameters.txt
The corresponding contour plots for the outdated 2016 version of the WNL-H50 grid can still be found here for reference.