166 citations · 1.2k across the 24 of their papers we have counts for
4 papers · 1 filter
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…
Planet signatures and effect of the chemical evolution of the Galactic thin-disk stars
Lorenzo Spina, Jorge Meléndez, Ivan Ramírez
Context: Studies based on high-precision abundance determinations revealed that chemical patterns of solar twins are characterised by the correlation between the differential abund…
The Kapteyn moving group is not tidal debris from Centauri
Camila Navarrete, Julio Chanamé, Iván Ramírez +3
The Kapteyn moving group has been postulated as tidal debris from Centauri. If true, members of the group should show some of the chemical abundance patterns known for stars in…
Shallow extra mixing in solar twins inferred from Be abundances
M. Tucci Maia, J. Meléndez, M. Castro +5
Lithium and beryllium are destroyed at different temperatures in stellar interiors. As such, their relative abundances offer excellent probes of the nature and extent of mixing pro…