Emelie Sandved & Diane Feuillet (Uppsala University): Understanding the chemical enrichment timeline of the Milky Way’s past and future building blocks (Introduction seminar)

Thursday 12 Mar 2026, 14:00 → 15:00 Europe/Stockholm

Å90103

Title: Understanding the chemical enrichment timeline of the Milky Way’s past and future building blocks
Speaker: Emelie Sandved & Diane Feuillet
Affiliation: Uppsala University
Time: Thursday 12 March 2026, 1400 to 1500
Location: Å90103

Abstract: The Milky Way halo contains several accreted stellar populations and studying them can give insight into galaxy formation and evolution of both the Milky Way and other, similar galaxies. This PhD thesis will focus on understanding the details of stellar ages and chemical evolution in nearby dwarf galaxies and accreted stellar populations in the Milky Way halo. The first project will establish the limitations and expand the applications of the existing age code developed by Sahlholdt & Lindegren (2021), which has been shown to recover previously seen details in the age-metallicity relation of the Milky Way disk. However, this code requires testing on stellar clusters, dwarf galaxies, and red giant stars to determine the limits of its applicability. The second part of the PhD will build off these results to provide constraints to the chemical enrichment timescales of the Milky Way dwarf galaxy and halo stellar populations. These projects will use existing and publicly available spectroscopic, photometric, and astrometric observational data from APOGEE, GALAH, Gaia, and HST. Later, when the upcoming data from 4MOST and WEAVE are available (both expected to start early 2026), the projects will expand to incorporate these new data.