Scientific Seminars

Structure evolution in a multi-parameter space of observables

Alessia Longobardi
Universita' di Milano - Bicocca

2022-06-14    11:00    Brera - Brera CUPOLA FIORE + Sala virtuale -meet.google.com/voo-iecc-eko

The study of the nearby Universe plays a key role in our understanding of structures' formation, giving us the possibility of studying in detail the gravitational and hydro-dynamical perturbations which led to the galaxies we see today. In this talk, I will present the first results of the Virgo Planetary Nebula survey that is allowing us to make specific measurements regarding the variations in space of age, metallicity, and spatial distribution of the galaxies and cluster’s stellar component in the regions where fossil records of hierarchical evolution are longer preserved. I will also show how this information has set the basis for a work that studied the cluster’s different baryonic components and that led to the first identification of an intracluster dust component in the Virgo cluster that acts as an important gas cooling mechanism. Finally, I will show how this data together with data coming from the Virgo Environmental Survey Tracing Ionised Gas emission (VESTIGE) can be used in synergy with back-in-time reconstruction techniques to model the time-integrated effect of perturbation mechanisms on the observed properties of galaxies.