Decipher the ubiquitous bursty phase in high-redshift galaxy formation

Speaker: 
Xiancheng Ma (Berkeley)
Date: 
Friday, November 20, 2020 - 12:15pm to 1:00pm

Galaxy formation is an essential research area in astronomy. High-resolution cosmological zoom-in simulations with realistic multi-phase ISM, star formation, and feedback models have significantly advanced our understanding of galaxy formation theory in recent years. One most important prediction is dwarf and high-redshift galaxies exhibit “bursty” star formation with the ISM characterized as highly chaotic and turbulent. The bursty regime is poorly understood, as different simulation groups produce diverging galaxy properties. I will briefly show how bursty SF affects our understanding of galactic chemical evolution, cosmic reionization, globular cluster formation, and supermassive black hole growth. I will discuss what predictions can be tested by future observations with JWST and 30 m-class telescopes and how these observations can be used to constrain star formation and feedback models in galaxy formation simulations.

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