论文标题
部分可观测时空混沌系统的无模型预测
The Ca II H&K Rotation-Activity Relation in 53 mid-to-late type M-Dwarfs
论文作者
论文摘要
在恒星磁力发电机的规范理论中，部分对流星的速度线用于排列小规模磁场，这是由于等离子体的随机运动而产生的，这是由等离子体的随机运动进入一个连贯的大规模场。完全对流的中间M型warfs比经典的磁性堤防理论预测，显示出更多的磁性活性。然而，中间至较小的M少量显示旋转与磁性活动之间的密切相关，这与经典的发电机理论元素一致。我们使用来自麦芽岩鸟摩兰氏菌（Mike）光谱仪的数据来详细介绍这些低质量恒星的Ca II H \＆k通量与旋转期之间的关系。我们测量从Mearth调查中选择的53个光谱识别的M-warfs的$ r'_ {hk} $值；这些恒星从M5.0到M3.5的光谱类别范围范围从小时到几个月不等。我们介绍了通过这些数据追踪的旋转 - 活动关系。我们发现权力法和饱和度与先前发布结果的一部分一致，并观察$ r'_ {hk} $中的质量依赖。
In the canonical theory of stellar magnetic dynamo, the tachocline in partially convective stars serves to arrange small-scale fields, generated by stochastic movement of plasma into a coherent large-scale field. Mid-to-late M-dwarfs, which are fully convective, show more magnetic activity than classical magnetic dymano theory predicts. However, mid-to-late M-dwarfs show tight correlations between rotation and magnetic activity, consistent with elements of classical dynamo theory. We use data from Magellan Inamori Kyocera Echelle (MIKE) Spectrograph to detail the relation between Ca II H\&K flux and rotation period for these low-mass stars. We measure $R'_{HK}$ values for 53 spectroscopically identified M-dwarfs selected from the MEarth survey; these stars span spectral classes from M5.0 to M3.5 and have rotation periods ranging from hours to months. We present the rotation--activity relationship as traced through these data. We find power law and saturated regimes consistent to within one sigma of previously published results and observe a mass dependence in $R'_{HK}$.
