September 17, 2024
Koh Takahashi
Division of Science, National Observatory of Japan
“Research on Stellar Evolution Using the HOSHI Code”



Stars, particularly massive ones, are ubiquitous visible light sources in the universe and drive galactic chemical evolution by dramatically altering their surrounding environments through radiation, stellar winds, and supernova explosions. Therefore, understanding the properties of stars is crucial, and numerical modeling has been employed to grasp their complex characteristics.
In this talk, the speaker, the lead developer of the Japanese stellar evolution code HOSHI, will present recent research conducted using the HOSHI code. The main topics include the incorporation of large-scale stellar magnetic fields in a general stellar evolution and the disk accretion evolution in the protostellar phase, with brief discussions on the gravitational collapse of massive stars.