839 citations · 5.4k across the 79 of their papers we have counts for
79 papers
A Population of Short-duration Gamma-ray Bursts with Dwarf Host Galaxies
Anya E. Nugent, Wen-fai Fong, Cristian Castrejon +3
We present a population of 11 of the faintest ( AB mag) short gamma-ray burst (GRB) host galaxies. We model their sparse available observations using the stellar population…
r-process Abundance Patterns in the Globular Cluster M92
Evan N. Kirby, Alexander P. Ji, Mikhail Kovalev
Whereas light element abundance variations are a hallmark of globular clusters, there is little evidence for variation in neutron-capture elements. A significant exception is M15,…
Extending the Chemical Reach of the H3 Survey: Detailed Abundances of the Dwarf-galaxy Stellar Stream Wukong/LMS-1
Guilherme Limberg, Alexander P. Ji, Rohan P. Naidu +10
We present the first detailed chemical-abundance analysis of stars from the dwarf-galaxy stellar stream Wukong/LMS-1 covering a wide metallicity range ($-3.5 < \rm[Fe/H] \lesssim -…
Metallicity Distribution Functions of 13 Ultra-Faint Dwarf Galaxy Candidates from Hubble Space Telescope Narrowband Imaging
Sal Wanying Fu, Daniel R. Weisz, Else Starkenburg +10
We present uniformly measured stellar metallicities for 463 stars in 13 Milky Way (MW) ultra-faint dwarf galaxies (UFDs; to ) using narrowband CaHK (F395N) imagi…
200,000 Candidate Very Metal-poor Stars in Gaia DR3 XP Spectra
Yupeng Yao, Alexander P. Ji, Sergey E. Koposov +1
Very metal-poor stars () in the Milky Way are fossil records of early chemical evolution and the assembly and structure of the Galaxy. However, they are rare and ha…
Observations of R-Process Stars in the Milky Way and Dwarf Galaxies
Anna Frebel, Alexander P. Ji
This chapter presents an overview of the recent progress on spectroscopic observations of metal-poor stars with r-process element signatures found in the Milky Way's stellar halo a…