Abstract

The technique of coronal mass ejection (CME) mass estimates from the energy of stellar flares has been applied to the data on the flare activity of late-type stars. In this study we use the data from catalogs on stellar flares obtained from the results of observations with the Kepler Space Telescope and present the relations between CME mass and effective temperature for objects from these catalogs. We have established that, in this case, the range of CME masses is \({\sim}10^{19}{-}10^{22}\) g, with an increase in the CME mass being observed as we pass to hotter (more massive) stars. We consider the data for several well-studied active stars that characterize the possible range of CME properties for cool dwarfs. Our results are compared with the data found by an independent method of estimates of CME characteristics from spectroscopic observations. The CME masses estimated from the empirical relations for flare energies exceed the CME masses found from the asymmetry of Balmer hydrogen line profiles.

中文翻译：

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关于晚型恒星冠状物质抛射的性质

摘要

由恒星耀斑能量估算的日冕质量抛射（CME）质量技术已应用于晚型恒星耀斑活动的数据。在这项研究中，我们使用从开普勒太空望远镜的观测结果获得的恒星耀斑目录数据，并介绍了这些目录中物体的CME质量与有效温度之间的关系。我们已经确定，在这种情况下，CME质量范围为\（{\ sim} 10 ^ {19} {-} 10 ^ {22} \）g，随着我们传给更热（质量更大）的恒星，观测到的CME质量增加。我们考虑了几个经过充分研究的活动恒星的数据，这些数据表征了冷矮星CME性质的可能范围。将我们的结果与通过独立方法从光谱观察中估计CME特征的数据进行比较。根据火炬能量的经验关系估计的CME质量超过了根据Balmer氢谱线的不对称性发现的CME质量。