双星星族研究取得新进展：双星复合星族模型

李忠木 教授、博士

双星复合星族模型比此前的单星简单星族、双星简单星族模型更具有科学根据，同时也具有更好的应用前景。目前，我们正在利用该模型对一些星系进行详细的研究。利用此模型，我们将可以有效地测定星系距离、质量、消光、年龄、元素丰度的重要的物理参数。

我们的研究结果已经在英国皇家天文学会会刊上发表。(论文地址：2012MNRAS.tmp.3274L， http://arxiv.org/abs/1207.1904)

Important Progress in Modeling Stellar Populations

Prof. Dr. Zhongmu Li

We have gained important progress on modeling stellar populations of galaxies and star clusters by building a new binary star composite stellar population synthesis model. Our model have taken the observational evidence about the larger fraction of binary stars in galaxies and multibursts in galaxies into account. Our model is able to well explain the UV upturn of SEDs of elliptical galaxies, and special stars like blue stragglers. 

Our new model is of more physical basis comparing to previous single star simple stellar population models and binary star simple stellar population models. It can therefore be used for a lot of astronomy studies, e.g., the determination of distance, mass, redenning, age, and metallicity of galaxies and star clusters. Our team is using this new model to study some galaxies in detail.

One can read the paper at http://arxiv.org/abs/1207.1904.