SEMINÁRIO DO DEPARTAMENTO DE ASTRONOMIA
Evolution of low-mass galaxies and their distribution across the cosmic web
a talk by Daniela Fernanda Palma Palma (IAG-USP, Brasil)
Abstract:
Low-mass galaxies provide valuable insight into how environment shapes galaxy evolution, given their strong susceptibility to external processes. In this talk, I will present results from the IllustrisTNG300 and MDPL2-SAG simulations, focusing on central galaxies with stellar masses between log(M∗/M⊙)= 9.5 and 10. I will explore how their main properties—such as stellar mass, gas content, and star formation activity—evolve from z=2 to the present, comparing systems located in the outskirts of groups and clusters, where they may or may not influence nearby low-mass galaxies, with those in more isolated regions.
I will then discuss how these galaxies contribute to the two-halo conformity signal, which quantifies correlations between galaxy properties (such as sSFR or color) with their neighbors at megaparsec scales. The strongest signal arises from the low-mass population, highlighting the role of the environment.
Short-Bio:
I am currently a postdoctoral fellow at IAG-USP, funded by FAPESP since August 2025. I obtained my Bachelor’s degree in Astronomy from Universidad de Concepción (Chile), my Master’s in Astrophysics from Universidad de Valparaíso (Chile), and my PhD in Astronomy and Planetary Sciences from Universidad de Atacama (Chile). My current research focuses on galaxy evolution using numerical simulations, environmental effects on low-mass galaxies, and the role of filamentary structures in shaping galaxy properties.
Google Meet: https://meet.google.com/pcw-gmem-jyi
Link da transmissão: https://www.youtube.com/c/AstronomiaIAGUSP/live