LARGE-SCALE ~13CO J = 5 4 AND [C I] MAPPING OF ORION A

摘要

We present maps of the ~13CO J = 5 4 (55l GHz) and [C I] ~3p_1 ~p_0 (492 GHz) emission in the Orion A molecular cloud, covering a 0.5 x 2 deg. area. A large velocity gradient (LVG) analysis of ~13CO J = 5 4 and ~13CO J = 5 4 suggests that the gas temperatures in the northern pat of OMC-l are ~45 K and are, on average, at least 20 K higher than those to the south.