The stellar initial mass function (IMF) is one of the most important assumptions applied in astronomical studies. The stellar populations in the local universe appear to have a universal and invariant IMF which has been adopted as the standard canonical IMF since 1955. However, observations in recent decays suggest that the IMF, in fact, varies in more extreme environments. In this talk, I will review the empirical constraints on the IMF variation and introduce the state of art integrated galactic IMF (IGIMF) formulation which predicts the galaxy-wide IMF according to the metallicity and the star formation intensity of a galaxy.
BIO
Yan Zhiqiang is currently a Postdoc at Nanjing University. He received his Ph.D. at Charles University in Prague by the end of 2021. His current research interests mainly focus on the chemical evolution simulation of ETGs and nearby dwarf galaxies.
Related publications:
https://ui.adsabs.harvard.edu/abs/2017A%26A...607A.126Y/abstract
https://ui.adsabs.harvard.edu/abs/2020A%26A...637A..68Y/abstract
https://ui.adsabs.harvard.edu/abs/2023A%26A...670A.151Y/abstract
