The electron-impact broadening effect in CP stars: the case of LaII, LaIII, EuII, and EuIII lines

Authors
Popovic, LC Dimitrijevic, MS Ryabchikova, T
Citation
Lc. Popovic et al., The electron-impact broadening effect in CP stars: the case of LaII, LaIII, EuII, and EuIII lines, ASTRON ASTR, 350(2), 1999, pp. 719-724
Citations number
39
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
350
Issue
2
Year of publication
1999
Pages
719 - 724
Database
ISI
SICI code
0004-6361(199910)350:2<719:TEBEIC>2.0.ZU;2-U
Abstract
The electron-impact widths and shifts for six Eu II lines and widths for th ree La II, and six La III multiplets have been calculated by using the modi fied semiempirical method. Estimation for Stark widths of 664.506 nm (Eu Ir ) and 666.634 nm (Eu III) lines are given as well. The influence of the ele ctron-impact mechanism on line shapes and equivalent widths in hot star atm ospheres has been considered.