Aa. Mihajlov et al., RADIATIVE HE-DWARF ATMOSPHERE ELECTROMAGNETIC CONTINUOUS SPECTRA((1S)+HE(1S(2)) PROCESSES AS THE SOURCE OF THE DB WHITE), The Astrophysical journal, 454(1), 1995, pp. 420-428
The influence of the processes of radiative charge transfer and photoa
ssociation during He+ + He collisional processes, as well as the proce
ss of the photodissociation of the He-2(+) molecular ion, on the forma
tion of the continuous spectrum of the DB white dwarf atmospheres with
T-eff = 12,000-30,000 K, for log g (gravity) = 7 and 8, is studied wi
thin the wavelength range lambda = 200-800 mm. It is shown that the co
ntribution of these processes relative to other relevant radiative pro
cesses is particularly important for T-eff less than or equal to 16,00
0 K and increases with the decrease of T-eff. Moreover, it is found th
at the influence of the considered He+ + He radiative processes is par
ticularly pronounced in the UV range.