论文标题
使用红色超级恒星，与相互作用的二进制恒星的比例无关
On aging star clusters using red supergiants independent of the fraction of interacting binary stars
论文作者
论文摘要
我们使用二元种群和光谱合成（BPASS）模型来测试最近的建议，即红色超级巨人可以提供对不受相互作用的二进制恒星影响的共同恶意恒星种群的准确年龄估计。通过使用最小亮度红色超级巨人和簇中红色超级巨人的平均光度来估计年龄。我们在许多观察到的星团上测试这些方法，并与先前的估计相一致。重要的是，我们发现从有或没有现实的相互作用二进制恒星的恒星种群模型中得出的年龄之间的差异最多只有100，000年。我们发现，群集中红色超级巨人的平均光度是确定群集年龄的最佳方法，因为它基于整个红色超级巨头种群，而不仅仅是使用最小发光的红色超级巨人。
We use the Binary Population and Spectral Synthesis (BPASS) models to test the recent suggestion that red supergiants can provide an accurate age estimate of a co-eval stellar population that is unaffected by interacting binary stars. Ages are estimated by using both the minimum luminosity red supergiant and the mean luminosity of red supergiants in a cluster. We test these methods on a number of observed star clusters and find our results in agreement with previous estimates. Importantly we find the difference between the ages derived from stellar population models with and without a realistic population of interacting binary stars is only a few 100,000 years at most. We find that the mean luminosity of red supergiants in a cluster is the best method to determine the age of a cluster because it is based o the entire red supergiant population rather than using only the least luminous red supergiant.
