Invited Talk - Plenary

Wednesday, 13 September 2023, 10:00   (H 0104 / virtual plenum)

Resolving the Baryon Cycle on Nearby Galaxies

Kathryn Kreckel
Uni Heidelberg

The buildup of stellar mass through star formation is driven on small (<100pc) scales by physical processes and local conditions, but regulated across larger (kpc) scales through the baryon cycle. This entails the transformation of gas into stars, and eventual ejection and recycling of material into the interstellar medium (ISM) through radiative and mechanical feedback processes to form the next generation of stars. I will show how my group is leveraging data from the PHANGS collaboration to build large statistical samples of star-forming HII regions, establishing an evolutionary sequence for HII regions and tracking the chemical enrichment of the ISM. In charting the late-time and large-scale feedback, I will show how morphological identification of bubbles in molecular and ionized gas, and now with JWST in the dust, provides quantitative constraints on different feedback mechanisms.