**A.2. Calculation of Continuum Emission**

With R_{HII} properly determined, the radio continuum
emission which occurs
due to the free-free emission from the ions and electrons
can be calculated by using the formula
(Spitzer 1978),

where, the coefficients of emission
_{} and absorption
_{} are given by,

The Gaunt factor (*g _{ff}*), is given by,

An electron temperature of 8000 K has been assumed for all calculations. The radio continuum has been calculated at a frequency of 5 GHz.