Seminario DAS: Effect of Feedback on the Molecular Clouds of 30 Doradus Studied with the APEX Telescope

Speaker: Mr. Konstantin Grishunin, PhD student, Max Planck Institute for Radio Astronomy

Abstract: The Large Magellanic Cloud (LMC) is a unique laboratory for extragalactic studies of star formation owing to its proximity (~50 kpc) and nearly face-on orientation. Since 2019, using the APEX telescope, we have been surveying the LMC in the CO(3–2) line unveiling the detailed distribution of the molecular gas in the LMC disk. So far, 13.9 sq. deg. of the disk have been covered at a spatial resolution of 5 pc. In this talk, I will introduce the survey as well as present one of the first projects based on its data – analysis of feedback fingerprints in the clouds of the active star-forming region 30 Doradus. Namely, we find that compared with the rest of the observed molecular clouds in the LMC disk, the ones of 30 Doradus show the highest areal number density; they are spatially more clustered, move faster with respect to each other and feature larger linewidths. We interpret our results as signatures of gas dispersal and fragmentation due to high-energy large-scale feedback.