Poster Presentation

Star formation and chemical enrichment in Protoclusters

Author(s): Keita Fukushima, Kentaro Nagamine, Ikko Shimizu

Presenter: Keita Fukushima (Osaka University)

We study the protocluster’s star formation and gas metallicity evolution at z=0.6-10 using the cosmological SPH simulation code GADGET3-Osaka. In our simulation, the total star formation rate in the protocluster region reaches 3000 M⦿yr-1 at z=3, with the core region accounting for about half of the star formation in the protocluster at z~2. By studying the chemical abundance evolution, we find that the effect of Type II supernova appear at z>2, while the effects of Type Ia and AGB stars appear at z~3. The relationship between (N/O) and (O/H) for individual galaxies at z~3.4 shows that (N/O) is slightly higher than observed.