The absence of the 10 μm silicate feature in the isolated Herbig Ae star HD 100453 G. Meeus, J. Bouwman, C. Dominik, L. B. F. M. Waters and A. de Koter A&A, 392 3 (2002) 1039-1046 Published online: 09 September 2002 DOI: 10.1051/0004-6361:20020952