Evidence for grain growth in T Tauri disks

被引：96

作者：

Przygodda, F

van Boekel, R

Abrahàm, P

Melnikov, SY

Waters, LBFM

Leinert, C

机构：

[1] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[2] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[3] Hungarian Acad Sci, Konkoly Observ Budapest, H-1525 Budapest, Hungary

[4] Ukbek Acad Sci, Ulugh Beg Astron Inst, Tashkent 700051, Uzbekistan

[5] Katholieke Univ Leuven, Inst Sterrenkunde, B-3001 Heverlee, Belgium

来源：

ASTRONOMY & ASTROPHYSICS | 2003年 / 412卷 / 02期

关键词：

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

D O I：

10.1051/0004-6361:20034606

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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] 2SiO4) 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.

引用

页码：L43 / L46

页数：4

共 15 条

[1] SPECTRAL EVOLUTION OF YOUNG STELLAR OBJECTS [J].