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Lithium spectral line formation in stellar atmospheres. The impact of convection and NLTE effects
J. Klevas, A. Kučinskas, M. Steffen +2
Different simplified approaches are used to account for the non-local thermodynamic equilibrium (NLTE) effects with 3D hydrodynamical model atmospheres. In certain cases, chemical…
GIANO Y-band spectroscopy of dwarf stars: Phosphorus, Sulphur, and Strontium abundances
E. Caffau, S. Andrievsky, S. Korotin +5
In recent years a number of poorly studied chemical elements, such as phosphorus, sulphur, and strontium, have received special attention as important tracers of the Galactic chemi…
Chemical composition of a sample of bright solar-metallicity stars
E. Caffau, A. Mott, M. Steffen +5
We present a detailed analysis of seven young stars observed with the spectrograph SOPHIE at the Observatoire de Haute-Provence for which the chemical composition was incomplete or…
Surface-effect corrections for solar-like oscillations using 3D hydrodynamical simulations
T. Sonoi, R. Samadi, K. Belkacem +3
The space-borne missions have provided us with a wealth of high-quality observational data that allows for seismic inferences of stellar interiors. This requires the computation of…
Lithium abundance in a turnoff halo star on an extreme orbit
Monique Spite, François Spite, Elisabetta Caffau +1
The lithium abundance in turnoff stars of the old population of our Galaxy is remarkably constant in the metallicity interval -2.8\textless{}[Fe/H] \textless{}-2.0, defining a plat…
The photospheric solar oxygen project: IV. 3D-NLTE investigation of the 777 nm triplet lines
M. Steffen, D. Prakapavičius, E. Caffau +5
The solar photospheric oxygen abundance is still widely debated. Adopting the solar chemical composition based on the "low" oxygen abundance, as determined with the use of three-di…