Agata Karska
Verein für datenintensive Radioastronomie & MPIfR in Bonn
Outflows from high-mass protostars: far-IR constraints on gas physical conditions and energetics
Massive star formation is associated with energetic processes that may influence the physics and chemistry of parental molecular clouds and even impact the galaxy evolution. Far-IR gas cooling lines are excellent diagnostics to study the properties of molecular, atomic, and ionic gas around high-mass protostars, and infer information about the underlying physical processes. In my talk, I will present three GREAT and FIFI-LS projects that characterize outflows from high-mass protostars. We identified broad line wings in two high-J CO lines toward 13 high-mass protostars, and estimated gas temperatures and densities in their outflows (Hoang et al. 2023). We showed that the location in the Milky Way, and possibly reduced metallicity, does not strongly impact the far-IR line cooling from high-mass protostars (Le et al. 2023). Finally, we obtained a spatially-resolved view of DR21 Main, revealing its complicated structure, and calculated its outflow energetics (Karska et al., in prep.). All of the projects showcase the unique capacities of SOFIA and its contribution to the field of star formation.
Authors: Agata Karska (1,2,3), Thanh Dat Hoang (1), Ngan Le (3), Miguel Figueira (4), Agnieszka Mirocha (5) , Friedrich Wyrowski (1) et al. 1 - MPIfR Bonn 2 - AIfA, University of Bonn 3 - NCU in Torun, Poland 4 - NCBJ Warsaw, Poland 5 - UJ Krakow, Poland
