论文标题
测量来自Kepler Mission观察到的活跃恒星中Skumanich制动指数的偏差
Measuring deviation from Skumanich braking index in active stars observed by Kepler mission
论文作者
论文摘要
这项工作的目的是确定磁制动指数$ q $与Skumanich $ Q = 3 $ canonical值的偏差。在这种情况下，目前的工作试图基于重力和离心力的平衡来分析制动指数，这是理解控制这些进化阶段恒星旋转的微妙机制的决定因素。在本研究中，我们使用了\ textit {kepler}任务的广泛样本，具有明确的质量，半径和旋转期。结果，\ textIt {kepler}恒星参数提供了$ q $ index的相当精确值，$ 1 \ leq q \ leq 3 $，这与磁性恒星风的模型的预测一致。我们的结果最终表明，在这项工作中使用的模型中，制动指数的任何显着偏差都远离$ q = 3 $的值$ q = 3 $发生在质量高于牛皮中间的质量上。
The aim of this work is to determine the deviation of the value of magnetic braking index $q$ from Skumanich $q=3$ canonical value for giant and main-sequence stars. In this context, the present work attempts to analytically calculate the braking index based on the balance of gravitational and centrifugal forces, a determining factor for understanding the delicate mechanisms that control the spin-down of stars in these evolutionary phases. In the present study, we used a wide sample of stellar targets from the \textit{Kepler} mission with well-defined mass, radius, and rotation period. As a result, \textit{Kepler} stellar parameters provide rather precise values of $q$ index limited in the range $1\leq q\leq 3$, which is consistent with the predictions of the model of magnetic stellar wind. Our results show conclusively that, within the model used in this work, any significant deviation of the braking index away from the value $q=3$ occurs at masses higher than the Kraft break.
