| ABUND | Abundance |
| Accuracy | This parameter reflects the reliability of the atomic data used
to estimate the emission-line fluxes. |
| | 1 = Accurate to 10% (Hydrogenic lines only) |
| | 2 = Average reliability |
| | 3 = Poor reliability (old data, many atomic levels, or radiative transfer problems |
| Alpha | Power law model index |
| Cut-off | Model cut-off energy (Ryd) |
| De | Electron density (cm^-3) |
| DH | Hydrogen density (cm^-3) |
| DIend | Distance at end of density bounded models (cm) |
| | (Not applicable to web-based models) |
| DISav | Average radius of each shell (cm) |
| DIST.Ave. | Average radius of each shell (cm) |
| DISfin | Final radius of the nebula (cm) |
| DISout | Radius at the outer edge of each shell (cm) |
| DILUav | Average geometric dilution factor. For plane parallel
models, DILUav will be 0.5. For spherical models, it
will be close to zero |
| DLOsav | Average differential loss between heating and cooling.
This should be close to zero if energy has been
conserved in the model |
| Dn | Ion density (cm^-3) |
| Dnum | Ion density (cm^-3) |
| dr | thickness of each shell (cm) |
| dR | thickness of each shell (cm) |
| dTau | Model step-size. Default=0.03 |
| dVol | Nebula volume in each shell (cm^3) |
| El.Dens | Electron density (cm^-3) |
| Ending | Model ending = A (fraction of HI = 99%) |
| FHI | Fraction of HI in each shell of the nebula |
| FHII | Fraction of HII in each shell of the nebula |
| FHXF | Final fraction of HII at the end of the nebula |
| Fill.F. or F.F. | Filling factor |
| Fren | Required final fraction of ionized hydrogen at model end (1%) |
| FQHeI | Flux of He+ ionizing photons(photons/s/cm^2) |
| FQHeII | Flux of He++ ionizing photons(photons/s/cm^2) |
| FQHI | Flux of H+ ionizing photons(photons/s/cm^2) |
| FQtot | Total Flux of ionizing photons(photons/s/cm^2) |
| Hden | Hydrogen density (cm^-3) |
| Hdens | Hydrogen density (cm^-3) |
| Ielen | Atomic number of element whose ionized fraction
determines the model ending (this is always
hydrogen=1). |
| Input | Will always read `interactive' for Mappings On-line
models |
| Int./H-beta | Integrated line intensity divided
by the intensity of H-beta |
| Jden | Density model chosen by user: c=isochoric,
b=isobaric |
| Jeq | Equilibrium model chosen (always E) |
| Jgeo | Geometry model chosen by user: s=spherical,
p=plane parallel |
| Jpoen | Ionization state of required model ending |
| | Web-based models: 1 (99% HI) |
| MOD | model choice: X=external, B=blackbody,
P=power law |
| Ndens | Ion density (cm^-3). For solar abundance,
Ndens ~ 1.1*Hdens (hydrogen density) |
| nH | Hydrogen density (cm^-3) |
| ne | Electron density (cm^-3) |
| Output | Output photoionization file (See description in the
Table above) |
| P5 | Photoionization model version IIId used |
| QHDN | Ionization parameter |
| |
| QHDH | Ionization parameter as above (cm/s) |
| QHDNin | Ionization parameter at the inner
edge of the nebula (cm/s) |
| QHDNav | Average ionization parameter (cm/s) |
| Remp | Initial radius of the nebula (cm) |
| Rmax | Maximum radius of model (cm) |
| Rsou | Source Radius (cm) |
| Run | Model designation entered by user |
| Tauen | Optical depth at model end for optical-depth limited models |
| | Not applicable to web-based moels |
| TauXF | Optical depth at Hydrogen edge (912A):
optically thick if TauXF > 1,
optically thin if TauXF < 1 |
| Teav | Average electron temperature (K) |
| Te Ave. | Average electron temperature (K) |
| Teini | Initial electron temperature (K) |
| Temp | Blackbody model temperature (K) |
| Tend | Temperature at model end (K) |
| Tfinal | Temperature at model end (K) |
| TOTLOSS | Total energy losses + total heating.
This should be close to zero if energy has been
conserved in the model. |
| Turn-on | Model turn-on energy (Ryd) |
| Z-star | Metallicity of mappings internal stellar atmosphere models |
| | Not applicable to web-based models |
| ZETAef | Alternative (archaic) measure of ionization
parameter |