Reversal of infall in SgrB2(M) revealed by<i>Herschel</i>/HIFI observations of HCN lines at THz frequencies
Reversal of infall in SgrB2(M) revealed by<i>Herschel</i>/HIFI observations of HCN lines at THz frequencies
To investigate the accretion and feedback processes in massive star formation, we analyze the shapes of emission lines from hot molecular cores, whose asymmetries trace infall and expansion motions. The high-mass star forming region SgrB2(M) was observed with Herschel/HIFI (HEXOS key project) in various lines of HCN and its isotopologues, …