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, 402 2 (2003) 767 Published online: 14 April 2003 DOI: 10.1051/0004-6361:20030404