The electron-impact broadening effect in hot star atmospheres: The case of singly- and doubly-ionized zirconium

被引：27

作者：

Popovic, LC ^{[1
]}

Milovanovic, N ^{[1
]}

Dimitrijevic, MS ^{[1
]}

机构：

[1] Astron Observ, YU-11160 Serbia 74, Yugoslavia

来源：

ASTRONOMY & ASTROPHYSICS | 2001年 / 365卷 / 03期

关键词：

atomic data; plasma; stars : atmospheres;

D O I：

10.1051/0004-6361:20000013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The electron-impact widths for 30 Zr III lines were calculated using the modified semi-empirical (MSE) method. For two Zr IE and four Zr III astrophysically important UV lines, only electron-impact widths are given, since for their calculation the experimental oscillator strengths were used and consequently the accuracy of the parameters is lower than in the case of other lines. The influence of the electron-impact mechanism on line shapes and equivalent widths in hot star atmospheres was also considered. The impact of the electron-impact broadening effect on abundance determination, particularly its effect on "zirconium conflict" is discussed as well.

引用

页码：656 / 659

页数：4

共 5 条

[1] Electron-impact broadening of ionized chromium lines for Ap star atmospheres analysis
Dimitrijevic, M. S.
Ryabchikova, T.
Simic, Z.
Popovic, L. C.
Dacic, M.
CONTRIBUTIONS OF THE ASTRONOMICAL OBSERVATORY SKALNATE PLESO, 2008, 38 (02): : 401 - 402
[2] QUANTUM-MECHANICAL CALCULATION FOR ELECTRON-IMPACT BROADENING OF RESONANCE LINES OF SINGLY IONIZED MAGNESIUM
BELY, O
GRIEM, HR
PHYSICAL REVIEW A-GENERAL PHYSICS, 1970, 1 (01): : 97 - +
[3] Atomic data and electron-impact broadening effect in DO white dwarf atmospheres:: SiVI
Hamdi, R.
Ben Nessib, N.
Milovanovic, N.
Popovic, L. C.
Dimitrijevic, M. S.
Sahal-Brechot, S.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 387 (02) : 871 - 882
[4] The electron-impact broadening effect in CP stars: the case of LaII, LaIII, EuII, and EuIII lines
Popovic, LC
Dimitrijevic, MS
Ryabchikova, T
ASTRONOMY & ASTROPHYSICS, 1999, 350 (02) : 719 - 724
[5] The electron impact broadening parameters in hot star atmospheres: Mn II, Mn III, Ga III, Ge III and Ge IV lines
Popovic, LC
Dimitrijevic, MS
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1998, 128 (01): : 203 - 205

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