Stark-broadening calculations of singly ionized carbon spectral lines

Authors

  • N. Larbi-Terzi,

    1. Groupe de Recherche en Physique Atomique et Astrophysique, Institut National des Sciences Appliquées et de Technologie, University of Carthage, Centre Urbain Nord BP No. 676, 1080 Tunis Cedex, Tunisia
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  • S. Sahal-Bréchot,

    Corresponding author
    1. Laboratoire d’Étude du Rayonnement et de la Matière en Astrophysique, Observatoire de Paris, UMR CNRS 8112, UPMC, Bâtiment Evry Schatzman, 5 Place Jules Janssen, F-92195 Meudon Cedex, France
      E-mail: Sylvie.Sahal-Brechot@obspm.fr
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  • N. Ben Nessib,

    1. Groupe de Recherche en Physique Atomique et Astrophysique, Institut National des Sciences Appliquées et de Technologie, University of Carthage, Centre Urbain Nord BP No. 676, 1080 Tunis Cedex, Tunisia
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  • M. S. Dimitrijević

    1. Laboratoire d’Étude du Rayonnement et de la Matière en Astrophysique, Observatoire de Paris, UMR CNRS 8112, UPMC, Bâtiment Evry Schatzman, 5 Place Jules Janssen, F-92195 Meudon Cedex, France
    2. Astronomical Observatory, Volgina 7, 11060 Belgrade 38, Serbia
    3. Isaac Newton Institute of Chile, Yugoslavia Branch, Volgina 7, 11060 Belgrade, Serbia
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E-mail: Sylvie.Sahal-Brechot@obspm.fr

ABSTRACT

Using the semiclassical perturbation approach in the impact approximation, we have obtained Stark-broadening parameters for 148 C ii multiplets. Energy levels and oscillator strengths are taken from the TOPbase data base. Results are obtained as a function of temperature for a set of perturber densities of 1014, 1017 and 1018 cm−3. In addition to electron-impact full half widths and shifts, Stark-broadening parameters due to singly ionized carbon impacts have been calculated. Thus, we have provided Stark-broadening data for the important charged perturbers in the atmospheres of carbon white dwarfs.

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