High-lying OH absorption, [C II] deficits, and extreme $L_{\mathrm{FIR}}/M_{H2}$ ratios in galaxies

E. González-Alfonso, J. Fischer, E. Sturm +22

Herschel/PACS observations of 29 local (Ultra-)Luminous Infrared Galaxies, including both starburst and AGN-dominated sources as diagnosed in the mid-infrared/optical, show that th…