Influence of Collisions with Charged Particles on Solar Type Star Spectra; Investigations on Belgrade Astronomical Observatory

Astronomy and Astrophysics – Astronomy

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Astronomical Observations, Luminosities, Magnitudes, Effective Temperatures, Colors, And Spectral Classification, Line Shapes, Widths, And Shifts, Stellar Atmospheres, Radiative Transfer, Opacity And Line Formation

Scientific paper

The significance of Stark broadening for Solar and stellar plasma research is discussed. Since the influence of Stark broadening within a spectral series increases with the increase of the principal quantum number of the upper level, the Stark broadening contribution may become significant for Rydberg atoms and ions where the optical electron is weakly bound to the core. Consequently, e.g. high member Balmer series lines may be used for Solar plasma diagnostic. The importance of Stark broadening for sub photospheric layers modelling is discussed also. The methods and results developed and obtained on Belgrade Astronomical Observatory and in Serbia are principally discussed .

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