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Model of Hydrogen Deficient Nebulae in H II Regions at High Temperature

In current photoionization models, determination of the ionization structure of the nebulae is a crucial 
part of the calculations for non-uniform hydrogen density. We have been tried to compute temperature 
fluctuations of electron and electron density by changing hydrogen density by scale factor 
of 10 at high temperature of blackbody. We have studied the ionization structure of hydrogen and 
helium by means of cloudy C13.01 codes. We find a reasonable close agreement of the computed 
value. Moreover, the ionization structure of oxygen at ionization stages of, O I - O IV, in gaseous nebulae 
are studied by changing non uniform hydrogen density with power law. Our simulation also 
shows that how the change of this density affect temperature fluctuations, electron density and ionization 
structures of oxygen, helium and hydrogen with and without grains. The result also shows 
the impact of the forbidden lines of [O III] and [O II] to cool down the temperature of electron.