论文标题
太阳能型星和冷却器矮人的循环
Cycles on the Solar-Type Stars and Cooler Dwarfs
论文作者
论文摘要
在几十年来观察到的65颗恒星，已经考虑了太阳能恒星和快速旋转的凉爽矮人的活动周期发展的特征。与太阳周期相比，持续时间为7 - 18年的循环在大约50％的研究恒星中被发现。在旋转期少于5天的凉爽矮人中，亮度的循环变化在更长的尺度上发生，长达80年。最高水平的活性是在K矮人上产生的。它们的主要周期很长，幅度最高。老式和年轻的太阳能型星在旋转较慢的情况下增加周期长度的趋势。对于$ p_ {rot} <5 $天，没有发现旋转期和循环持续时间之间关系的证据。
Features of the development of activity cycles in the solar-type stars and fast-rotating cool dwarfs have been considered for 65 stars observed in some decades. Cycles with duration of 7-18 years compared to the solar cycle were found for about 50% of the studied stars. In cooler dwarfs with rotation periods of less than 5 days, cyclic changes in brightness occur on longer scales, up to 80 years. Activity of the highest level is produced on K dwarfs; their main cycles are long and have the highest amplitudes. Both old and young solar-type stars show a similar tendency in increasing the cycle length with a slower rotation. No evidence for a relation between the rotation period and duration of cycles was found for cool dwarfs with $P_{rot} < 5$ days.
