A SYSTEMATIC CHANGE WITH TIME IN THE SIZE OF BETELGEUSE

被引：26

作者：

Townes, C. H. ^{[1
,2
]}

Wishnow, E. H. ^{[1
,2
]}

Hale, D. D. S. ^{[3
]}

Walp, B. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[3] CALTECH, Dept Astron, Pasadena, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2009年 / 697卷 / 02期

基金：

美国国家科学基金会;

关键词：

stars: general; stars: individual (Betelgeuse); techniques: interferometric; ALPHA-ORIONIS; DIAMETERS; GIANTS;

D O I：

10.1088/0004-637X/697/2/L127

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The diameter of Betelgeuse (alpha Orionis) has been measured at a wavelength of 11.15 mu m using the Infrared Spatial Interferometer over the past 15 years. During this 1993-2009 time period the star's size has decreased systematically by 15%.

引用

页码：L127 / L128

页数：2

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