SPATIALLY RESOLVED SPECTRA OF SILICATE DUST AROUND ALPHA-ORIONIS

被引：19

作者：

SLOAN, GC

GRASDALEN, GL

LEVAN, PD

机构：

[1] UNIV WYOMING,DEPT PHYS & ASTRON,LARAMIE,WY 82071

[2] G STAR ENTERPRISES,DENVER,CO 80209

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 404卷 / 01期

关键词：

CIRCUMSTELLAR MATTER; DUST; EXTINCTION; INFRARED; STARS; INDIVIDUAL; (ALPHA-ORIONIS);

D O I：

10.1086/172282

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have observed alpha Orionis with a 10 mum long-slit spectrometer. By applying maximum entropy reconstruction techniques, we have spatially resolved the silicate emission from the circumstellar shell. The emissivity derived from our silicate spectrum compares favorably with published emissivity profiles describing circumstellar silicates. The lack of silicate emission in the direction of the central star suggests that the circumstellar dust may not be distributed in a spherical shell.

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页码：328 / 332

页数：5

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