High-resolution ammonia mapping of the very young protostellar core Chamaeleon-MMS1 M. S. Väisälä, J. Harju, M. J. Mantere, O. Miettinen, R. S. Sault, C. M. Walmsley and J. B. Whiteoak A&A, 564 (2014) A99 Published online: 11 April 2014 DOI: 10.1051/0004-6361/201322069