Modelling star formation and feedback in local galaxies
Title: Modelling star formation and feedback in local galaxies
DNr: SNIC 2022/5-490
Project Type: SNIC Medium Compute
Principal Investigator: Angela Adamo <>
Affiliation: Stockholms universitet
Duration: 2022-10-25 – 2023-11-01
Classification: 10305


As explained in the activity report, the simulation we run has already proven to provide a successful match with the observations of the real galaxy M83. We are currently analysing the connection between the large scale galactic dynamics and the small star forming structures. A series of publications will soon present the first results from this simulation. However, the ultimate goal of our scientific project is to use simulations to estimate the timescales involved in the regulation of star formation by feedback, quantities which are out of reach of observations. To reach this objective, we need to model the long term evolution of the galaxy, and measure the lifetimes of structures like the bar and the spiral arms. This requires to continue running our simulation for a longer period. Therefore, and now that we know that the simulation is successful, we request a renewal of this allocation, in order to reach all the remaining scientific objectives. The exact amount of time needed is still uncertain, because it depends on the lifetime of the structures (i.e. exactly the quantities that we will determine). However, tests at lower resolution have shown that modeling another 2 to 3 billions of years of evolution will be sufficient. Thus, we have estimated our needs using the current speed of the simulation.