ULTRA-HIGH-RESOLUTION OBSERVATIONS OF CA K-LINE VARIATIONS IN THE BETA-PICTORIS DISC

被引：32

作者：

CRAWFORD, IA

SPYROMILIO, J

BARLOW, MJ

DIEGO, F

LAGRANGE, AM

机构：

[1] ANGLO AUSTRALIAN OBSERV,EPPING,NSW 2121,AUSTRALIA

[2] UNIV JOSEPH FOURIER,GRP ASTROPHYS GRENOBLE,F-38041 GRENOBLE,FRANCE

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1994年 / 266卷 / 04期

关键词：

LINE PROFILES; CIRCUMSTELLAR MATTER; STARS INDIVIDUAL BETA-PIC;

D O I：

10.1093/mnras/266.1.L65

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present observations of the beta Pictoris circumstellar Ca II K line, obtained with the new Ultra-High-Resolution facility (UHRF) at the Anglo-Australian Telescope. The resolving power was R greater than or similar to 900000, and these data therefore comprise the highest resolution observations yet obtained of this object. Observations were obtained on three nights in 1993 (May 11, August 26 and August 29), and significant temporal variability was observed, including previously unobserved changes in the profile of the main circumstellar component.

引用

页码：L65 / L68

页数：4

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