The next SFB-colloquium will be on November 25 at 2 pm in the Lecture Hall III of the Physics Institutes in Cologne.
Robert Simon and Simon Dannhauer from the I.Physics Institute, University of Cologne will talk about “Studying stellar feedback in the Milky Way and Magellanic Clouds, the CCAT/FYST and SOFIA connection“.
Project B2 characterizes the feedback of massive stars and their habitats in the Milky Way and Magellanic Clouds through high resolution spectroscopy. Our focus is on large-scale observations of atomic carbon and CO lines. B2 thus provides important information for small-scale observations in the A-projects and, together with the study of nearby galaxies in B3, helps to bridge the spatial and environmental gap between the A- and C-projects.
CCAT/FYST is expected to start operation in early 2026. We will employ the CCAT Heterodyne Array Instrument (CHAI), currently being built in Cologne, for large scale observations in mid-J CO rotational lines (tracing the warm, dense gas associated with stellar feedback) and fine structure transitions of CI (tracing the atomic phase of Photon Dominated Regions and CO-dark molecular gas). In order to follow the cycle of carbon in massive star forming regions, we use complementary data of ionized carbon (CII) and also atomic oxygen (OI). Therefore, SOFIA archival data continue to play an important role, in particular through the SOFIA legacy project ‘FEEDBACK’. We will give an overview of the FEEDBACK achievements and present some of the science highlights.