EDP Sciences
Free Access
Volume 412, Number 2, December III 2003
Page(s) L43 - L46
Section Letters
DOI https://doi.org/10.1051/0004-6361:20034606
Published online 28 November 2003

A&A 412, L43-L46 (2003)
DOI: 10.1051/0004-6361:20034606


Evidence for grain growth in T Tauri disks

F. Przygodda1, R. van Boekel2, P. Àbrahàm3, S. Y. Melnikov4, L. B. F. M. Waters2, 5 and Ch. Leinert1

1  Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
2  Astronomical Institute "Anton Pannekoek", University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
3  Konkoly Observatory of the Hungarian Academy of Sciences, 1525 Budapest, PO Box 67, Hungary
4  Ulugh Beg Astronomical Institute, Academy of Sciences of Uzbekistan, Astronomical str. 33, Tashkent 700051, Uzbekistan
5  Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200B, 3001 Heverlee, Belgium

(Received 9 September 2003 / Accepted 5 November 2003)

In this article we present the results from mid-infrared spectroscopy of a sample of 14 T Tauri stars with silicate emission. The qualitative analysis of the spectra reveals a correlation between the strength of the silicate feature and its shape similar to the one which was found recently for the more massive Herbig Ae/Be stars by van Boekel et al. (2003). The comparison with theoretical spectra of amorphous olivine ([Mg,Fe] 2SiO 4) with different grain sizes suggests that this correlation is indicating grain growth in the disks of T Tauri stars. Similar mechanisms of grain processing appear to be effective in both groups of young stars.

Key words: stars: pre-main sequence -- stars: planetary systems: protoplanetary disks -- stars: circumstellar matter

Offprint request: F. Przygodda, przygodda@mpia.de

SIMBAD Objects

© ESO 2003

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.