The photoionization code CLOUDY is a widely-distributed package to model the spectra of low-density regions (inter-galactic medium to H II regions), as well as the emission-line regions around quasars. An essential input is the Spectral Energy Distribution of the object(s) illuminating the region which is modeled with Cloudy. In many cases, this object is a massive hot star.
Peter van Hoof prepared and provided SEDs of O and B stars, based on the OSTAR2002 and the BSTAR2006 grids, that can be directly used by CLOUDY. For this purpose, the original SEDs have been equidistantly-resampled and rebinned to nearly 20,000 frequency points. Additionally, Cloudy can interpolate a SED for intermediate values of effective temperature, surface gravity, and metallicity, between the selected grid points. The SEDs are provided as gzipped ASCII files for each metallicity, as well as a large ASCII file containing SEDs for all metallicities (but the metal-free models) to allow for interpolating in Z / Zo. Merged files, spanning the whole range of the OSTAR2002 and the BSTAR2006 grids are also available. The merged files use the BSTAR2006 models for effective temperatures up to 30,000 K and the OSTAR2002 models for higher temperatures.
OSTAR2002 Models
All rebinned SEDs (9 metallicities): ostar2002_3d.ascii.gz (47 MB)
The rebinned SEDs are available for 10 scaled-solar chemical
compositions:
| Z / Zo | File | Z / Zo | File | |||
|---|---|---|---|---|---|---|
| 2 | ostar2002_p03.ascii.gz | 1 / 30 | ostar2002_m15.ascii.gz | |||
| 1 | ostar2002_p00.ascii.gz | 1 / 50 | ostar2002_m17.ascii.gz | |||
| 1 / 2 | ostar2002_m03.ascii.gz | 1 / 100 | ostar2002_m20.ascii.gz | |||
| 1 / 5 | ostar2002_m07.ascii.gz | 1 / 1000 | ostar2002_m30.ascii.gz | |||
| 1 / 10 | ostar2002_m10.ascii.gz | 0 | ostar2002_m99.ascii.gz |
BSTAR2006 Models
All rebinned SEDs (5 metallicities): bstar2006_3d.ascii.gz (62 MB)
The rebinned SEDs are available for 6 scaled-solar chemical
compositions:
| Z / Zo | File | Z / Zo | File | |||
|---|---|---|---|---|---|---|
| 2 | bstar2006_p03.ascii.gz | 1 / 30 | ||||
| 1 | bstar2006_p00.ascii.gz | 1 / 50 | ||||
| 1 / 2 | bstar2006_m03.ascii.gz | 1 / 100 | ||||
| 1 / 5 | bstar2006_m07.ascii.gz | 1 / 1000 | ||||
| 1 / 10 | bstar2006_m10.ascii.gz | 0 | bstar2006_m99.ascii.gz |
Reference: Lanz, T., & Hubeny, I. 2007, ApJS, 169, 83 (Abstract) (PDF)
Merged Files (OSTAR2002 + BSTAR2006)
All rebinned SEDs (5 metallicities): obstar_merged_3d.ascii.gz (86 MB)
The rebinned SEDs are available for 6 scaled-solar chemical
compositions:
| Z / Zo | File | Z / Zo | File | |||
|---|---|---|---|---|---|---|
| 2 | obstar_merged_p03.ascii.gz | 1 / 30 | ||||
| 1 | obstar_merged_p00.ascii.gz | 1 / 50 | ||||
| 1 / 2 | obstar_merged_m03.ascii.gz | 1 / 100 | ||||
| 1 / 5 | obstar_merged_m07.ascii.gz | 1 / 1000 | ||||
| 1 / 10 | obstar_merged_m10.ascii.gz | 0 | obstar_merged_m99.ascii.gz |
Last update: January 2, 2010