IRAS 08572+3915: constraining the aromatic versus aliphatic content of interstellar HACs E. Dartois, T. R. Geballe, T. Pino, A.-T. Cao, A. Jones, D. Deboffle, V. Guerrini, Ph. Bréchignac and L. d'Hendecourt A&A, 463 2 (2007) 635-640 Published online: 27 November 2006 DOI: 10.1051/0004-6361:20066572