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Research Article Open access CC BY 4.0

Singly Ionized Iridium Spectral Lines in the Atmosphere of Hot Stars

Zoran Simic´, Nenad M. Sakan, Nenad Milovanovic, Mihailo Martinovic

Journal of Pharmaceutical Research International · pp. 86–100 · Published 19 Jul 2021

Abstract

The electron-impact broadening parameters of ion lines are of interest for a number of problems in astrophysical, laboratory, and technological plasma investigations. Singly ionized Iridium lines are confirmed their presence in stellar spectra of the chemically peculiar stars. Our calculations are performed using the modified semiempirical method of Dimitrijevic and Konjevi ´ c. Stark widths for ´ 301 Ir II spectral lines are presented. From the calculated list of lines, the 21 strongest lines from the iridium spectrum are selected with high value of intensity ≥ 3000 to demonstrate importance of the Stark broadening mechanism for different types of stars. The analysis of the electron-impact effect on spectral line shapes are performed and obtained Stark and Doppler withds are compared.

Atomic data lines plasmas

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