Alexander P. Ji
2 papers · Latest:
Galaxies & Cosmology
The Metallicity Distribution of the Ultra-Faint Dwarf Galaxy Segue 1
New spectroscopic data for Segue 1, an ultra-faint dwarf galaxy, reveals its metallicity distribution, supporting a short, continuous star formation history.
2605.12810
The $R$-Process Alliance: Actinide Abundances, Variation, and Evolution in Metal-Poor Stars
This paper analyzes thorium abundances in 47 metal-poor stars, revealing insights into r-process events and challenging current astrophysical models.
2604.12892
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