Naslov
Impact of Stark broadening on Co II spectral line modelling in hot stars

Autori
Almodlej, Abeer ; Majlinger, Zlatko ; Ben Nessib, Nabil, Dimitrijević, S. Milan ; Srećković, A. Vladimir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni

Izvornik
Publications Of The Astronomical Observatory Of Belgrade No 99 / Popović, Luka, Borka, Duška, Ilić, Dragana, Srećković, Vladimir - Beograd : Astronomical Observatory Of Belgrade, 2020, 283-286

Skup
30th Summer School and International Symposium on the Physics of Ionized Gases (SPIG 2020)

Mjesto i datum
Šabac, Srbija, 24.08.2020. - 28.08.2020

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Spectral line broadening, Stark width, hot stars atmosphere
(Spectral line broadening, Stark width, hot stars spectra, abundance determination)

Sažetak
The ignorance of Stark broadening during the modelling of a spectral line profile in hot star spectra can cause significant errors in abundance determination. We choose several Co II, spectral lines observed in stellar spectra to show how Stark broadening influence on their profiles and we calculated Stark widths which can help to determine the abundance of this element in stellar atmosphere more accurate. Using calculated Stark widths, line profiles are synthesized and compared with isolated lines from existing observed stellar spectra. Comparisons of synthetic lines with and without taking of Stark broadening into consideration confirm previous findings that exist cases when synthetic lines with inclusion of Stark widths better fit in the observed spectral lines, especially in the line wings. 1

Izvorni jezik
Engleski

POVEZANOST RADA