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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


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

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