Fundamental metallicity scaling relations in cosmological simulations

DE ROSSI, MARÍA EMILIA; THEUNS, TOM; FONT, ANDREEA S.; MCCARTHY, IAN G.

Congreso; 58a Reunión Anual de la Asociación Argentina de Astronomía; 2015

In this work, we analyse metallicity scaling relations of galaxies by using Galaxies-Intergalactic Medium Interaction Calculation simulations. Our results show that stellar metallicity correlates with stellar mass, in agreement with observations. At a given mass, systems with lower gas fractions or lower star formation rates are, on average, more metal-enriched. In addition, satellite galaxies tend to have higher metallicities that central galaxies of similar masses. The relation between mass and stellar metallicity does not evolve significantly with redshift. These trends obtained for the stellar phase are weaker than those found for the gas component in previous studies.