Astron. Astrophys. Suppl. Ser. 131, 141-142

Stark broadening of spectral lines of multicharged ions of astrophysical interest

XX. O VII and Mg XI spectral lines

M.S. Dimitrijevic¹ - S. Sahal-Bréchot²

Send offprint request: M.S. Dimitrijevic

1 - Astronomical Observatory, Volgina 7, 11050 Belgrade, Yugoslavia
2 - Laboratoire "Astrophysique, Atomes et Molécules'', Département Atomes et Molécules en Astrophysique, Unité associée au CNRS 812, Observatoire de Paris-Meudon, 92190 Meudon, France

Received January 28; accepted January 29, 1998

Abstract:

Using a semiclassical perturbation approach, we have calculated electron-, proton-, and He III-impact line widths and shifts for 14 O VII and 18 Mg XI multiplets. For O VII, perturber densities are 10¹⁷- 10²³ cm^-3 and temperatures T =100000 - 2000000 K. For Mg XI, perturber densities are 10¹⁸- 10²⁴ cm^-3 and temperatures T =500000- 5000000 K. For lower perturber densities, the Stark broadening parameters are proportional to the perturber density.

Key words: line: profiles-atomic data -- plasmas