Determination of the energy distribution beyond layman limit in emission spectra of hii regions nuclei in blue compact dwarf galaxies

Abstract

The energy distribution in the spectrum of HII regions in blue compact dwarf galaxies in the wavelength region λ 912–22.8 Å is obtained. The methods of L_c spectrum computation were discussed and the two versions of solving this problem are considered. The first version correspond to a supposition on similarity of spectral slopes beyond the hydrogen and helium discontinuities (the emission fluxes were evaluated at λ 912, λ 504, λ 228 Å and a spectral index α). The second version correspond to a supposition that helium discontinuities are absent (emission flux on λ 912 Å and a spectral index in each of the three wavelength bands λλ 912–504 Å, λλ 504–228 Å, λλ 228–22.8 Å were determined). A special class in programming language С++ was created for fast L_c spectrum computation using these methods, and thus other scientists could use these methods in their programmes.