Journal Article

Stark-broadening calculations of singly ionized carbon spectral lines

N. Larbi-Terzi, S. Sahal-Bréchot, N. Ben Nessib and M. S. Dimitrijević

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 423, issue 1, pages 766-773
Published in print June 2012 | ISSN: 0035-8711
Published online May 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.20968.x
Stark-broadening calculations of singly ionized carbon spectral lines

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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.

Keywords: atomic data; atomic processes; line: profiles; white dwarfs

Journal Article.  3233 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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