2 papers
astro-ph.GA2026
The Panchromatic Hubble Andromeda Southern Treasury (PHAST). II. The Spatially Resolved Recent Star Formation History in M31
Tobin M. Wainer, Benjamin F. Williams, Zhuo Chen +19
We use Hubble Space Telescope optical imaging from the Panchromatic Hubble Andromeda Southern Treasury (PHAST) to measure the spatially resolved recent star formation history (SFH)…
astro-ph.GA2025
The odd primordial halo of the Milky Way implied by Gaia. A shallow core, but a steep decline
Pengfei Li, Stacy S. McGaugh, Marcel S. Pawlowski +2
Primordial dark matter halos are well understood from cold dark matter-only simulations. Since they can contract significantly as baryons settle into their centers, direct comparis…