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Atoms 2017, 5(3), 26;

Stark Widths of Ar II Spectral Lines in the Atmospheres of Subdwarf B Stars

Deanship of the Foundation Year, Department of Physics, Umm Al-Qura University, Makkah 24382, Saudi Arabia
Faculté des Sciences de Bizerte, Université de Carthage, Zarzouna 7021 Bizerte, Tunisia
Department of Physics and Astronomy, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
LERMA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC (Univ. Pierre & Marie Curie), Paris 06, 5 Place Jules Janssen, 92190 Meudon, France
Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia
Author to whom correspondence should be addressed.
Academic Editor: Robert C. Forrey
Received: 29 August 2017 / Accepted: 4 September 2017 / Published: 7 September 2017
(This article belongs to the Special Issue Spectral Line Shapes in Astrophysics and Related Topics)
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Stark broadening parameters are of interest for many problems in astrophysics and laboratory plasmas investigation. Ar II spectral lines are observed in many kinds of stellar atmospheres such as the atmospheres of B-Type stars and subdwarf B stars. In this work, we present theoretical Stark widths for Ar II spectral lines. We use the impact semiclassical perturbation approach. Our results are compared with the available experimental values. Finally, the importance of the Stark broadening mechanism is studied in atmospheric conditions of subdwarf B stars. View Full-Text
Keywords: stark broadening; atomic data; subdwarfs B stars; Ar II stark broadening; atomic data; subdwarfs B stars; Ar II

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Hamdi, R.; Ben Nessib, N.; Sahal Bréchot, S.; Dimitrijević, M.S. Stark Widths of Ar II Spectral Lines in the Atmospheres of Subdwarf B Stars. Atoms 2017, 5, 26.

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