As the witnesses of the early Universe, dwarf galaxies, especially the low-mass ones (total mass ≤ 10^9 M⊙), carry the imprint of essential physical processes, from the formation of the first stars to the formation of the first galaxies, which shaped the universe into the one we observe today. I will show the power of searching dwarf galaxy debris in the low-metallicity Milky Way, and how their detailed elemental abundances unveil stellar nucleosynthesis and galactic chemical evolution at high redshift. In the second part of my talk, I will show our predicted dwarf galaxy detection limit of the CSST, which is an optimal tool by design to search for low-mass/faint dwarf galaxies within the Local Volume.
BIO
Dr. Yuan, Zhen is now a postdoc at Strasbourg Observatory, CNRS, and will start tenure-track assistant professor position at the School of Astronomy and Space Science at Nanjing University in the first half of 2024.
Zhen's research focuses on Galactic Archaeology, Local Group dwarf galaxies, Gaia Science. Her expertise is applying Machine Learning tools tailored to various Astronomical datasets. Zhen is a survey builder of the Pristine, and member of WEAVE and 4MOST, as well as an old school observer who takes stellar spectra at 2-8m telescopes. (personal website: https://www.zyuan-astro.com)
