Construction of progenitor models for electron capture supernovae

电子俘获超新星前身模型的构建

• 批准号: 22540246
• 负责人: UMEDA Hideyuki
• 金额: $ 2.33万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-10-20 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22540246/
• 关键词: 理論天文学; 超新星; 親星; 超新星親星; 電子捕獲型; 電子捕獲型超新星; 大質量星; 元素合成; 恒星進化; 電子捕獲率; 原子核反応; 理論天体物理学; 質量放出; 超新星爆発

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.

电子俘获超新星（ECSNe）被认为是核心坍缩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SN光变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，它们并没有得到太多的考虑。造成这种情况的主要原因之一是，他们的祖先模型很少被计算过。这是因为恒星演化过程中的物理过程与大质量铁核形成恒星有很大的不同，并且非常复杂。随着这些模型在爆炸模拟中的应用，我们希望在不久的将来，我们对ECSNe的理解会有所提高。

项目成果

Evolution of stars just below the critical mass for iron core

铁核临界质量以下恒星的演化

• 发表时间: 2012
• 作者: Takahashi;W.
• 通讯作者: W.

A progenitor for the extremely luminous Type Ic supernova 2007bi

• DOI: 10.1111/j.1745-3933.2011.01008.x
• 发表时间: 2011-01
• 期刊: Monthly Notices of the Royal Astronomical Society: Letters
• 作者: T. Yoshida;H. Umeda

初代星進化に自転運動が与える影響

自转运动对第一颗恒星演化的影响

• 发表时间: 2013
• 作者: Haruki Watanabe;Tomas Brauner;Brauner;Hitoshi Murayama;K. Kanazawa and Y. Koike;高橋亘，吉田敬，梅田秀之
• 通讯作者: 高橋亘，吉田敬，梅田秀之

Type Ic core-collapse supernova explosions evolved from very massive stars

• DOI: 10.1093/mnras/stt2427
• 发表时间: 2013-12
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: T. Yoshida;Shinpei Okita;H. Umeda

回転大質量星進化コードの開発

旋转大质量恒星演化代码的开发

• 发表时间: 2011
• 作者: 吉田敬