4 papers · 1 filter
The Rise of the -Process in the Gaia-Sausage/Enceladus Dwarf Galaxy
Xiaowei Ou, Alexander P. Ji, Anna Frebel +2
Neutron star mergers (NSMs) produce copious amounts of heavy r-process elements after a time delayed inspiral process. Once NSMs are present in a galaxy, r-process elements, such a…
The Escape Velocity Profile of the Milky Way from Gaia DR3
Cian Roche, Lina Necib, Tongyan Lin +2
The escape velocity profile of the Milky Way offers a crucial and independent measurement of its underlying mass distribution and dark matter properties. Using a sample of stars fr…
Synthetic Gaia DR3 surveys from the FIRE cosmological simulations of Milky-Way-mass galaxies
Tri Nguyen, Xiaowei Ou, Nondh Panithanpaisal +4
The third data release (DR3) of Gaia has provided a five-fold increase in the number of radial velocity measurements of stars, as well as a stark improvement in parallax and proper…
Stellar Metallicities from SkyMapper Photometry II: Precise photometric metallicities of 280,000 giant stars with [Fe/H] in the Milky Way
Anirudh Chiti, Anna Frebel, Mohammad K. Mardini +3
The Milky Way's metal-poor stars are nearby ancient objects that are used to study early chemical evolution and the assembly and structure of the Milky Way. Here we present reliabl…