65 citations · 197 across the 6 of their papers we have counts for
6 papers
Non-detection of Li in Spite plateau stars with ESPRESSO
E. X. Wang, T. Nordlander, M. Asplund +3
The detection of Li in Spite plateau stars contradicts the standard Big Bang nucleosynthesis prediction, known as the second cosmological lithium problem. We measure the isotop…
The relationship between photometric and spectroscopic oscillation amplitudes from 3D stellar atmosphere simulations
Yixiao Zhou, Thomas Nordlander, Luca Casagrande +5
We establish a quantitative relationship between photometric and spectroscopic detections of solar-like oscillations using ab initio, three-dimensional (3D), hydrodynamical numeric…
Non-LTE analysis of K I in late-type stars
Henrique Reggiani, Anish M. Amarsi, Karin Lind +7
Older GCE models predict [K/Fe] ratios as much as 1 dex lower than those inferred from stellar observations. Abundances of potassium are mainly based on analyses of the 7698 re…
Evidences of extragalactic origin and planet engulfment in the metal-poor twin pair HD 134439/HD 134440
Henrique Reggiani, Jorge Meléndez
Recent studies of chemical abundances in metal-poor Halo stars show the existence of different populations, which is important for studies of Galaxy formation and evolution. Here w…
Constraining cosmic scatter in the Galactic halo through a differential analysis of metal-poor stars
Henrique Reggiani, Jorge Meléndez, Chiaki Kobayashi +2
We present the abundances of Li, Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Zn, Sr, Y, Zr, and Ba in a wide metallicity range ( [Fe/H] ). Using the differen…
The first high precision differential abundance analysis of Extremely Metal Poor stars
Henrique Reggiani, Jorge Meléndez, David Yong +2
Context: Studies of extremely metal-poor stars indicate that chemical abundance ratios [X/Fe] have an rms scatter as low as 0.05 dex (12 \%). It remains unclear whether this reflec…