A&A 402, 767 (2003)
DOI: 10.1051/0004-6361:20030404


The absence of the 10 $\mu$m silicate feature in the isolated Herbig Ae star HD 100453

G. Meeus 1 - J. Bouwman2 - C. Dominik3 - L. B. F. M. Waters3 - A. de Koter3

1 - Astrophysikalisches Institut Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany
2 - Service d'Astrophysique, CEA Saclay, 91191 Gif-sur-Yvette, France
3 - Astronomical Institute Anton Pannekoek, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands

A&A, 392, 1039 (2002), DOI: 10.1051/0004-6361:20020952

In this paper we refer to a 1.2 mm measurement of HD 100453 and quote a flux of 30 mJy. This flux is incorrect. The correct value obtained in the measurement is  $265 \pm 21$ mJy (S. Wolf and M. Albrecht, private communication). When considering this value, the long wavelength slope $\alpha$ of the SED is now -2.8 instead of -3.7. The new value is consistent with large grains. Therefore, the general lack of small silicate grains is the most likely explanation for the weakness of the 10 $\mu$m silicate feature in this source. We are grateful to M. Albrecht for reducing and discussing the SIMBA data.

Copyright ESO 2003