The peculiar emission-line star MWC 137 with its extended optical nebula was recently classified as B[e] supergiant. To study the spatial distribution of its circumstellar molecular gas on small and large scales, we obtained near-infrared and radio observations using SINFONI and APEX, respectively. We find that the hot CO gas is arranged in moving clumpy ring and shell structures close to the star, while a cold CO envelope is encircling the borders of the optical nebula from the south to the west.

翻译：最近,特别的排放线恒星MWC 137及其延伸光学星云最近被归类为B[e]超级。为了研究其小和大尺度环星分子气的空间分布,我们分别利用SINFONI和APEX进行了近红外和无线电观测。我们发现,热CO气体安排在靠近恒星的地方移动煤块环和炮弹结构,而冷CO信封正在从南向西包围光星云的边界。