High-resolution Expanded Very Large Array Image of Dimethyl Ether (CH3)2O in Orion-KL

摘要: We report the first subarcsecond (065 × 051) image of dimethyl ether molecule, (CH3)2O, toward Orion Kleinmann-Low nebula. The observations were carried at 43.4 GHz with Expanded Very Large Array (EVLA). distribution lower energy transition 61, 5-60, 6, EE (E u = 21 K) mapped in this study is excellent agreement published emission maps imaged a resolution. main peaks are observed Compact Ridge and Hot Core southwest components, northern parts an intermediate position between Core. A notable result that very similar to another important larger O-bearing species, methyl formate (HCOOCH3), Our shows higher spectral resolution (WIDAR correlator) increased coverage provided by EVLA offer new possibilities for imaging complex molecular species. sensitivity improvement other improvements make instrument well suited high sensitivity, angular resolution, line imaging.