Infall and rotation motions in the HH 111 protostellar system: a flattened envelope transition to a disk? Posted on June 26, 2014 by UHNAI Webmaster in Lee, C. F.,Y.-Y. Mao, B. Reipurth (). Infall and rotation motions in the HH 111 protostellar system: a flattened envelope transition to a disk?. , 694,