Abstract

Poster - Splinter General   (Aula 1&2 / virtual plenum)

The Interplay Between Stellar Feedback and Gas Turbulence in Giant Molecular Clouds

Wajdee Chayeb, Lukas Neumann, Frank Bigiel, Tim Eric Rathjen, Stefanie Walch, Andrea Romanelli, and Melanie Chevance
University of Bonn/ Argelander Institute for Astronomy

It is not yet fully understood how gas is converted into stars at different stages of the lifecycle of Giant Molecular Clouds (GMCs). Properties of GMCs like density and turbulence affect how efficiently the gas is forming stars. We investigate the effect of these two properties on the star formation rate density at two stages of the evolution of GMCs (early, with no stars being formed and late, with young hot stars and strong stellar feedback) to better understand the lifecycle of GMCs and galaxy evolution. We use CO and Hα maps of 18 galaxies with high resolution (∼ 150 pc) from the PHANGS-ALMA survey (Leroy et al. 2021; Chevance et al. 2020) to distinguish between the early and the late phase and study the relation between gas turbulence and star formation rate density . Furthermore, we compare our results with a magnetohydrodynamical simulation to study the effect of the environment on the correlation.