Metallicity abundances as fingerprints of galaxy evolution

08/06/2022 - 14:00
Remoto, com transmissão pela internet
Metallicity abundances as fingerprints of galaxy evolution
Dr. Patricia Tissera
(Pontificia Universidad Católica, CL)
The evolution of chemical abundances in galaxies provides crucial information to study how they formed and evolved. Results in the Local Universe show that on average, star-forming gas-phase in galaxies  have negative metallicity gradients and that flat and inverted positive gradients could be associated with galaxy interactions. As a function of redshift, the trend is not clear enough yet, although there is a significant fraction of inverted metallicity gradients. In this talk I am going to summarize the latest results from the EAGLE project on the evolution of the metallicity gradients as a function of stellar mass, galaxy size and star formation efficiency up to z~2.5 and  on  the impact of the environment by analyzing  the metallicity gradients of galaxies in voids and filaments. I will also show first results on a study of the processes that shape metallicity gradients with the CIELO simulations.
Dr. Patricia Tissera is a professor at the Institute of Astrophysics and the Center for AstroEngineering of the Pontificia Universidad Católica de Chile. She leads the Numerical Formation and Evolution of Galaxies group. She completed her doctorate at the National University of Córdoba in Argentina and postdoctoral stays at the University of Oxford, Autonomous University of Madrid and the Imperial College of Science, Medicine and Technology. Dr. Tissera is an expert in the study of the physical processes that govern the formation and evolution of galaxies using  numerical simulations. For her scientific work, she has received the L'oreal Award, -Unesco-Conicet, the Scopus Award for Young Scientist and the Houssay Award granted by the Presidency of the Argentine Republic, among others. Dr. Tissera is co-director of the ERIS Millennium Nucleus and principal investigator of the CATA Center of Excellence in Chile.