Results 31 to 40 of about 984,465 (267)

Stark Widths of Yb III and Lu IV Spectral Lines

open access: yesAtoms, 2019
Rare Earth Elements are important for stellar atmosphere analysis but the corresponding Stark broadening data are scarce. For Yb III and Lu IV theoretical as well as experimental data on Stark broadening parameters of spectral lines are absent in the ...
Milan S. Dimitrijević
doaj   +1 more source

Line profiles in expanding atmospheres [PDF]

open access: yesSymposium - International Astronomical Union, 1994
The analysis of the UV resonance transitions of superionized species observed in early-type stars suggests the presence of a high temperature region and an outward flow of matter (Snow & Marlborough 1976).
openaire   +1 more source

Stark Broadening and White Dwarfs

open access: yesOpen Astronomy, 2011
White dwarf and pre-white dwarfs are the best types of stars for the application of Stark broadening research results in astrophysics, since in the atmospheres of these stars physical conditions are very favorable for this line broadening mechanism - in ...
Dimitrijević Milan S.   +3 more
doaj   +1 more source

Electron energy-loss spectroscopy of autoionizing states of zinc [PDF]

open access: yesSerbian Astronomical Journal, 2004
Autoionizing energy-loss spectra of Zn from 10.8 to 12.5 eV, for incident electron energies between 20 and 100 eV, have been recorded at scattering angles from 0° to 10°.
Predojević B.   +4 more
doaj   +1 more source

Stark Broadening of Several Ne II, Ne III and O III Spectral Lines for the Stark-B Database

open access: yesOpen Astronomy, 2011
In order to complete Stark broadening data for Ne II and O III lines, needed for analysis of stellar atmospheres, we determined the missing parameters for the broadening by collisions with protons and ionized helium for 15 Ne II and 5 O III multiplets ...
Dimitrijević Milan S.   +3 more
doaj   +1 more source

Stark Broadening of Se IV, Sn IV, Sb IV and Te IV Spectral Lines

open access: yesAtoms, 2018
Stark broadening parameters, line width and shift, are needed for investigations, analysis and modelling of astrophysical, laboratory, laser produced and technological plasmas.
Milan S. Dimitrijević   +5 more
doaj   +1 more source

Hydrogen Line Profiles [PDF]

open access: yesHighlights of Astronomy, 1995
Observed hydrogen line profiles are an enormously important source of diagnostic information about virtually all kinds of astronomical bodies. Therefore, it is important to understand the hydrogen line formation in sufficient detail to be able to achieve a high degree of reliability by analyzing observed hydrogen line profiles.Calculation of the ...
openaire   +1 more source

Line-profile variability of EZ CMa [PDF]

open access: yesSymposium - International Astronomical Union, 1995
CCD spectra for the unusual Wolf-Rayet star EZ CMa (WR6) are presented. The analysis of the profile changes of HeII lines shows a correlation between the gravity center of the line and the skewness (Robert et al. 1992). The fourth moment (kurtosis) changes with phase and looks epoch independent.
L. Georgiev, M. M. Ivanov
openaire   +1 more source

Data on Stark Broadening of N VI Spectral Lines

open access: yesData
Data on Stark broadening parameters, spectral line widths, and shifts for 15 multiplets of N VI, whose spectral lines are broadened by collisions with electrons, protons, alpha particles (He III) and B III, B IV, B V and B VI ions, are presented.
Milan S. Dimitrijević   +2 more
doaj   +1 more source

Stark Broadening of Cr III Spectral Lines: DO White Dwarfs

open access: yesAtoms, 2018
Using the modified semiempirical method of Dimitrijević and Konjević, Stark widths have been calculated for six Cr III transitions, for an electron density of 10 17 cm ‒ 3 and for temperatures from 5000–80,000 K.
Milan S. Dimitrijević   +1 more
doaj   +1 more source

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