322 citations · 3.7k across the 69 of their papers we have counts for
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The Hamburg/ESO R-process Enhanced Star survey (HERES) X. HE 2252-4225, one more r-process enhanced and actinide-boost halo star
L. Mashonkina, N. Christlieb, K. Eriksson
We report on a detailed abundance analysis of the r-process enhanced giant star, HE 2252-4225 ([Fe/H] = -2.63, [r/Fe] = 0.80). Determination of stellar parameters and element abund…
Non-LTE Sodium Abundance in Galactic Thick- and Thin-Disk Red Giants
S. A. Alexeeva, Yu. V. Pakhomov, L. I. Mashonkina
We evaluate non-local thermodynamical equilibrium (non-LTE) line formation for neutral sodium in model atmospheres of the 79 red giants using the model atom that incorporates the b…
The Hamburg/ESO R-process Enhanced Star survey (HERES) IX. Constraining pure r-process Ba/Eu abundance ratio from observations of r-II stars
Lyudmila Mashonkina, Norbert Christlieb
The oldest stars born before the onset of the main s-process are expected to reveal a pure r-process Ba/Eu abundance ratio. We revised barium and europium abundances of selected ve…