Sun-bathing around low-mass protostars: APEX-CHAMP+ observations of high-J CO

Ewine F. van Dishoeck, Tim A. van Kempen, Rolf Guesten

We present the first maps of high-excitation CO J=6-5 and 7-6 and isotopologue lines over 2'-5' regions at 10" resolution toward low-mass protostars to probe the origin of the warm…