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Tracing the first stars and galaxies of the Milky Way
Brendan F. Griffen, Gregory A. Dooley, Alexander P. Ji +3
We use 30 high-resolution dark matter halos of the simulation suite to probe the first stars and galaxies of Milky Way-mass systems. We quantify the environment of th…
Chemical Diversity in the Ultra-faint Dwarf Galaxy Tucana II
Alexander P. Ji, Anna Frebel, Rana Ezzeddine +1
We present the first detailed chemical abundance study of the ultra-faint dwarf galaxy Tucana II based on high-resolution Magellan/MIKE spectra of four red giant stars. The metalli…
Complete element abundances of nine stars in the r-process galaxy Reticulum II
Alexander P. Ji, Anna Frebel, Joshua D. Simon +1
We present chemical abundances derived from high-resolution Magellan/MIKE spectra of the nine brightest known red giant members of the ultra-faint dwarf galaxy Reticulum II. These…