188 citations · 951 across the 30 of their papers we have counts for
3 papers · 1 filter
Non-LTE iron abundances in cool stars: The role of hydrogen collisions
Rana Ezzeddine, Thibault Merle, Bertrand Plez
In the aim of determining accurate iron abundances in stars, this work is meant to empirically calibrate H-collision cross-sections with iron, where no quantum mechanical calculati…
Effective collision strengths between Mg I and electrons
T. Merle, F. Thévenin, O. Zatsarinny
The treatment of the inelastic collisions with electrons and hydrogen atoms are the main source of uncertainties in non-Local Thermodynamic Equilibrium (LTE) spectral line computat…
Potassium: a new actor on the globular cluster chemical evolution stage. The case of NGC 2808
A. Mucciarelli, M. Bellazzini, T. Merle +3
We derive [K/Fe] abundance ratios for 119 stars in the globular cluster NGC 2808, all of them having O, Na, Mg and Al abundances homogeneously measured in previous works. We detect…