Stark broadening of spectral lines of multicharged ions of astrophysical interest^*

XX. O VII and Mg XI spectral lines

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

Send offprint request to: M.S. Dimitrijević

Received: 28 January 1998
Accepted: 29 January 1998

Abstract

Using a semiclassical perturbation approach, we have calculated electron-, pro ton-, and He III- im pact 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  K. For Mg XI, perturber densities are 10¹⁸- 10²⁴ cm^-3 and temperatures  K. For lower perturber densities, the Stark broadening parameters are proportional to the perturber density.