On the connection between galactic downsizing and the most fundamental galactic scaling relations

Understand

In their evolution, star-forming galaxies are known to follow scaling relations between some fundamental physical quantities, such as the mass-metallicity and the main sequence relations.

• We aim at studying the evolution of galaxies that, at a given redshift, lie simultaneously on the mass-metallicity and main sequence relations (MZR, MSR).
• To this aim, we use the analytical, 'leaky-box' chemical evolution model of Spitoni et al.
• (2017), in which galaxy evolution is described by an infall timescale $\tau$ and a wind efficiency $\lambda$.