Hierarchical fragmentation and collapse signatures in a high-mass starless region H. Beuther, Th. Henning, H. Linz, S. Feng, S. E. Ragan, R. J. Smith, S. Bihr, T. Sakai and R. Kuiper A&A, 581 (2015) A119 Published online: 18 September 2015 DOI: 10.1051/0004-6361/201526759