Voor de beste ervaring schakelt u JavaScript in en gebruikt u een moderne browser!
Je gebruikt een niet-ondersteunde browser. Deze site kan er anders uitzien dan je verwacht.

The origin of elements and chemodynamical simulations of galaxies

Event details of Chiaki Kobayashi (University of Hertfordshire)
Date 10 November 2021
Time 11:00 -12:00

At the beginning of the Universe only light elements such as H, He, Li were produced. Heavier elements such as C, O, Fe and neutron-capture elements were created inside stars. Mass loss from AGB stars and (rotating) massive stars produce a significant fraction of C, N, F, and minor isotopes of O and Mg, as well as the slow-neutron capture elements. I will summarize the origin of stable elements using my Galactic chemical evolution model, comparing to the observations. The discovery of rare star SMSS J200322.54-114203.3 ([Fe/H]=-3.5) strongly supported magneto-rotational hypernovae for the r-process site, in addition to neutron star mergers. The detection of fluorine in a high-redshift galaxy NGP-190387 indicates the importance of stellar rotation in the early Universe. In a galaxy, chemical enrichment takes place inhomogeneously, following star formation, gas inflow, radial flow, and outflow, and stellar migration, and I will also show chemodynamical simulations, which can be tested by future observations such as with the JWST.