Terahertz spectroscopy of the 15NH2 amidogen radical L. Margulès, M. A. Martin-Drumel, O. Pirali, S. Bailleux, G. Wlodarczak, P. Roy, E. Roueff and M. Gerin A&A, 591 (2016) A110 Published online: 22 June 2016 DOI: 10.1051/0004-6361/201628201