Ia型超新星在现代宇宙学中有着非常重要的应用，但是其前身星是什么依然不清楚。我们建立了一个能解释大部分有关Ia型超新星观测现象的前身星模型，即公共包层星风模型，但是这个模型仍然在发展当中，有很多细节问题还没有搞清楚，比如说当双星系统处于公共包层星风阶段时,系统看起来是什么样子的。本项目的主要目的就是继续发展公共包层星风模型，并应用此模型来解释一些相关天体的观测特征，如超软X射线源和游荡在银河系中的Ia型超新星的残留伴星。另外，我们还将用观测统计的方法来研究Ia型超新星前身星模型和爆炸模型之间的相关性。

Type Ia supernovae (SNe Ia) are very important for cosmology, but it is still unclear on their progenitors. We constructed a new version of the single-degenerate model for SNe Ia, i.e. the common-envelope wind model, which may explain most of the observational properties of SNe Ia. However, the model is still under development and many detailed questions on the model are still open, e.g. the exact appearance of the system during the common-envelope wind phase. Here, we will continue to develop the common-envelope wind and use the model to explain the related objects, e.g. supersoft X-ray sources and the surviving companions of SNe Ia in the Galaxy. In addition, we will also study the correlation between the progenitor model and the explosion model on SNe Ia by a statistical method.