Orateur
Description
Zoom-in simulations from the kpc scale to star forming cores
- Abstract: :: Star formation plays a crucial role in shaping its environment and drives the evolution of planets, the interstellar medium, galaxies, and the Universe as a whole. We investigate this process using numerical simulations that follow star-forming structures across a wide range of spatial scales.
We first simulate a kiloparsec (~1000 pc) portion of a galaxy using the adaptive-mesh refinement code RAMSES. From this large-scale simulation, we identify and extract multiple star-forming regions, which inherit their physical conditions from the initial galactic environment.
We then zoom-in on these regions, reaching spatial scales of ~200 AU. Within these zoomed simulations, we identify dense cores and analyze their statistical properties, including the core mass function, turbulence, and fragmentation. By studying a large sample of regions with self-generated initial conditions, we capture the diversity of star-formation environments within a galaxy and quantify how core properties vary from one region to another. Finally, we compare our numerical results with observational data to assess how well the simulated core populations reproduce observed properties and how their characteristics depend on environment.