L1544 1.2 and 2mm emission maps

In dense and cold molecular clouds dust grains are surrounded by thick icy mantles. It is however not clear if dust growth and coagulation take place before the switch-on of a...在致密寒冷的分子云（molecular clouds）中，尘埃颗粒（dust grains）被厚实的冰幔（icy mantles）所包裹。然而目前尚不明确，尘埃生长与凝聚过程是否发生在某一进程的启动（switch-on）之前。