论文标题
使用Asterosemology检查对流核心过冲和恒星特性之间的关系
Examining the Relationship Between Convective Core Overshoot and Stellar Properties Using Asteroseismology
论文作者
论文摘要
核心过冲是构建恒星模型的大型不确定性来源。即使模型有时会假设基于质量的趋势，量不变的量是恒定的还是质量依赖的。在这项工作中，我们使用\ textIt {kepler}观察到的星星的星形震数据来研究各种恒星属性之间的关系与正确对给定的恒星建模所需的过冲所需的量。我们发现恒星质量和恒星过冲量之间的强劲趋势在1.1至1.5 $ m_ \ odot $之间，斜率为0.89。此外，我们研究了推断出的恒星特性是如何随超冲的函数而变化的。我们的模型网格表明，根据过冲的程度，推断的恒星质量和半径分别可以变化多达14 \％和6 \％。这种质量扩散导致年龄段的相应扩散。
Core overshoot is a large source of uncertainty in constructing stellar models. Whether the amount of overshoot is constant or mass dependent is not completely known, even though models sometimes assume a mass-based trend. In this work we use asteroseismic data from stars observed by \textit{Kepler} to investigate the relationship between various stellar properties and the amount of overshoot needed to properly model a given star. We find a strong positive trend between stellar mass and overshoot amount for stars between 1.1 and 1.5 $M_\odot$, with a slope of 0.89. Additionally, we investigate how inferred stellar properties change as a function of overshoot. Our model grids show that the inferred stellar mass and radius can vary by as much as 14\% and 6\% respectively, depending on the extent of overshoot. This mass spread results in a commensurate spread in the ages.
