We present an analysis of the procedure for plasma electron number density, Ne,
diagnostics based on the comparison of theoretical and experimental shape or width of …

The measurement of stellar properties such as chemical compositions, masses and ages,
through stellar spectra, is a fundamental problem in astrophysics. Progress in the …

Balmer-alpha,-beta and-gamma lines have been calculated using computer simulations
including ion dynamics effects for equilibrium and non-equilibrium conditions. The results …

Context. The primordial nature of the Spite plateau is at odds with the WMAP satellite
measurements, implying a primordial Li production at least three times higher than …

Electron density is one of the key parameters in the physics of a gas discharge. In this
contribution the application of the Stark broadening method to determine the electron …

Very high quality spectra of 24 metal-poor halo dwarfs and subgiants have been acquired
with ESO's VLT/UVES for the purpose of determining Li isotopic abundances. The derived …

We present improved calculations for the Stark broadening of hydrogen lines in dense
plasmas typical of white dwarf atmospheres. Our new model is based on the unified theory …

Context. To alleviate the discrepancy between the prediction of the primordial lithium
abundance in the universe and the abundances observed in Pop II dwarfs and subgiant …

We report the results of a high-resolution spectroscopic survey of all the stars more luminous
than MV= 6.5 mag within 14.5 pc from the Sun. The Hipparcos catalog's completeness limits …

We report on a detailed abundance analysis of HE 0107-5240, a halo giant with [Fe/H]
NLTE=-5.3. This star was discovered in the course of follow-up medium-resolution …