标题： 主序星阶段对流核心质量的变化 显示英文标题

标题： Evolution of the Convective Core Mass during the Main Sequence

摘要： 我们构建了一个半解析模型，用于描述经历主序阶段质量损失的恒星的对流核质量演化。 首先，我们进行了一系列一维恒星演化计算，以了解在理想化质量损失条件下对流核质量的行为。 基于这些模拟，我们发现恒星的整体属性之间存在若干普遍关系，这些关系与质量损失历史无关。 通过结合这些关系，我们构建了一个半解析框架，能够预测任意质量损失历史下的对流核质量演化，从而推断主序阶段结束时的氦核质量。 我们的公式改进了现有快速群体综合代码中预测核心质量的方法。 显示英文摘要

摘要： We construct a semi-analytical model that describes the convective core mass evolution of massive stars experiencing mass loss during the main-sequence stage. We first conduct a suite of 1D stellar evolution calculations to build insight into how convective core masses behave under idealized mass loss. Based on these simulations, we find several universal relations between global properties of the star that hold regardless of the mass loss history. By combining these relations, we construct a semi-analytic framework that can predict the convective core mass evolution for arbitrary mass loss histories and hence the helium core mass at the end of the main sequence. Our formulae improve upon existing methods for predicting the core mass in rapid population synthesis codes.