利用Ia型超新星测距，人们发现了宇宙在加速膨胀，从而推论出暗能量的存在。但是，到目前为止人们仍不清楚它的前身星，前身星问题得不到解决将阻碍精确宇宙学的发展。本项目将基于恒星绝热物质损失模型得到的更准确的双星物质稳定性交流判据以及更合理的公共包层演化来改进当前的大样本恒星演化模型，进而来研究Ia型超新星的前身星，并从观测上认识前身星，具体研究内容如下：(1)研究各种白矮星吸积模型，解决其诞生率不足的问题；(2)研究双白矮星剧烈并合模型，给出该模型可与观测进行对比的量；(3)区分观测上的大质量白矮星双星系统中的白矮星是哪一类白矮星，并预言其最终命运，看能否诞生Ia型超新星；(4)对Ia型超新星进行早期光谱观测，进而从观测上认识前身星。该项研究将进一步加深人们对Ia型超新星前身星的认识，并促进相关领域的发展。

It has been found that the expansion of the Universe is accelerating through observations of distant type Ia supernovae. This leads to the hypothesis of dark energy. However, the exact nature of type Ia supernova progenitors is still uncertain, which will directly affect the accuracy of the results of the current cosmology. In this project, we will study the progenitors of type Ia supernovae by using a new binary population synthesis approach based on the reasonable criteria of stable mass transfer and the common envelope evolution which are obtained from a new star adiabatic mass-loss model, and then investigate their progenitors via observational constraints. (1) We will study various of white dwarf accretion model of type Ia supernovae, which will increase the birthrates of type Ia supernovae. (2) We will study violent merge model of double white dwarfs, and then get the observational properties of this model at the moment of supernova explosion. (3) We will discriminate the observational massive white dwarfs in the binary systems are which type of white dwarfs, and give the final fate of these binaries and predict whether these white dwarfs produce type Ia supernovase or not. (4) We will study the progenitor models of type Ia supernovae via spectra observations of their early explosion stage. This project will have important influences on the question of the progenitors of type Ia supernovae, and promote the development of related fields.