PERIODIC LOW-AMPLITUDE VARIATIONS IN THE BRIGHTNESS OF PROXIMA-CENTAURI

被引：17

作者：

BENEDICT, GF

NELAN, E

MCARTHUR, B

STORY, D

VANALTENA, W

YANG, TG

JEFFERYS, WH

HEMENWAY, PD

SHELUS, PJ

WHIPPLE, AL

FRANZ, OG

FREDRICK, LW

DUNCOMBE, RL

机构：

[1] YALE UNIV,DEPT ASTRON,NEW HAVEN,CT 06511

[2] SHAANXI OBSERV,LINTONG,PEOPLES R CHINA

[3] UNIV TEXAS,DEPT ASTRON,AUSTIN,TX 78712

[4] LOWELL OBSERV,FLAGSTAFF,AZ 86001

[5] UNIV VIRGINIA,DEPT ASTRON,CHARLOTTESVILLE,VA 22903

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 1993年 / 105卷 / 687期

关键词：

D O I：

10.1086/133182

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using data acquired with Fine Guidance Sensor #3 on board the Hubble Space Telescope we find that the brightness of Proxima Centauri varies with an amplitude of 0.01 mag and a period P=41.6+/-0.6 days. We interpret this variation as rotational modulation of star spots or bright regions in the photosphere of Proxima Cen. In a total of 89.36 min of monitoring over 212 days, we detected one major flare and three post-flare brightenings.

引用

页码：487 / 493

页数：7

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