Speaker
Zhaozhou Li
(Nanjing University)
Description
JWST observations reveal a surprising excess of luminous galaxies at z≳10, suggesting a high star formation efficiency. This contrasts with the low star formation efficiency suppressed by feedbacks at later times, indicating a potential paradigm shift. We propose that the high densities and low metallicities at high z guarantee high star-formation efficiency through feedback-free starbursts (FFBs) in the most massive halos. I will discuss the expected conditions for FFBs and the observable predictions for galaxy mass and luminosity functions, sizes, outflows, etc. I will also discuss how the FFB scenario may help to understand the formation of high-z massive quiescent galaxies and blackhole growth.
Primary author
Zhaozhou Li
(Nanjing University)
