MIDINFRARED SPECTROSCOPY OF BETA-PICTORIS - CONSTRAINTS ON THE DUST GRAIN-SIZE

被引:38
作者
AITKEN, DK [1 ]
MOORE, TJT [1 ]
ROCHE, PE [1 ]
SMITH, CH [1 ]
WRIGHT, CM [1 ]
机构
[1] UNIV OXFORD,DEPT ASTROPHYS,OXFORD OX1 3RH,OXON,ENGLAND
关键词
CIRCUMSTELLAR MATTER; STARS; INDIVIDUAL; BETA PIC; DUST; EXTINCTION; INFRARED;
D O I
10.1093/mnras/265.1.L41
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present 8-13 mu m spectroscopy of Beta Pictoris which confirms the presence of silicate emission in its infrared excess, as earlier reported on the basis of narrow-band photometry, and indicates a similarity with cometary dust. The spectral form of the infrared excess allows us to place an upper limit of 2-3 mu m on the size of the emitting grains in the circumstellar disc.
引用
收藏
页码:L41 / L43
页数:3
相关论文
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