The global dust SED: tracing the nature and evolution of dust with DustEM M. Compiègne, L. Verstraete, A. Jones, J.-P. Bernard, F. Boulanger, N. Flagey, J. Le Bourlot, D. Paradis and N. Ysard A&A, 525 (2011) A103 Published online: 03 December 2010 DOI: 10.1051/0004-6361/201015292