Construction of progenitor models for electron capture supernovae

电子俘获超新星(ECSNe)被认为是核坍塌超新星中最轻的超新星。一般来说，质量较小的恒星数量会增加。因此，ECSNe对于SN光曲线和元素起源的研究具有重要意义。然而，在这些领域的研究中，对它们的考虑还不是很多。造成这种情况的主要原因之一是，他们的祖先模型以前很少被计算出来。这是因为恒星演化的物理过程与更大质量的铁核形成恒星有很大的不同，而且非常复杂。在这项研究中，我们成功地计算了ECSNe的前身模型，在距上次计算约30年后，我们使用了最新的输入物理。通过将这些前驱模型应用于爆炸模拟，我们预计在不久的将来我们对ECSNe的理解将会有所提高。

Electron capture supernovae (ECSNe) are considered to be the lightest supernovae among the core-collapse SNe. In general stellar number increases for less massive stars. Therefore ECSNe should be important for the study of SN light curves and the origin of elements. However they have not been considered much in the study of these fields. One of the main reasons for this situation is that their progenitor models have rarely been calculated previously. This is because the physical processes during the stellar evolution is quite different from more massive Fe-core forming stars, and are very complicated.In this study we successfully calculated progenitor models for ECSNe with up-dated input physics after about 30 years since the previous calculation. With applying these progenitor models for explosion simulations, we expect that our understanding about ECSNe will improve in near future.