论文标题
晚期星星在蚀二进制中的基本特性
Fundamental Properties of Late-Type Stars in Eclipsing Binaries
论文作者
论文摘要
对黯然失色的二进制系统的分析的证据表明，晚期恒星比模型预测的更大，更凉爽，这可能是由出色的磁性活动引起的。在这项工作中，我们考虑了过去十年中的进步。我们提供并更新了32个黯然失色的二进制或多个系统的列表，包括至少一个质量$ \ lyssim 0.7 $ m $ _ {\ odot} $的星星，质量和半径的精度比3％更好。与恒星结构和进化理论模型的比较揭示了半径和有效温度的总体差异约为7％和-4％，并且可能比以前在完全对流边界以下发现的总体差异大。此外，通过比较具有相似成分的不同系统的比较来增强恒星活性的假设。通过准确确定的质量和半径以及估计的活性水平以及在理论模型中实施磁性活动的进一步黯然失色的二进制文件将有助于提高我们对低质量恒星的了解，这是对系外行星调查的主要目标。
Evidence from the analysis of eclipsing binary systems revealed that late-type stars are larger and cooler than predicted by models, and that this is probably caused by stellar magnetic activity. In this work, we revisit this problem taking into account the advancements in the last decade. We provide and updated a list of 32 eclipsing binary or multiple systems, including at least one star with a mass $\lesssim 0.7$ M$_{\odot}$ and with mass and radius measured to an accuracy better than 3%. The~comparison with stellar structure and evolution theoretical models reveals an overall discrepancy of about 7% and -4% for the radius and effective temperature, respectively, and that it may be larger than previously found below the full convection boundary. Furthermore, the hypothesis of stellar activity is reinforced by the comparison of different systems with similar components. Further eclipsing binaries with accurately determined masses and radii, and with estimated activity levels, as well as the implementation of magnetic activity in theoretical models will help to improve our knowledge of low-mass stars, which are prime targets for exoplanet surveys.
