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.
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页码：487 / 493
页数：7
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