Abstract:
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.
