标题： Ia型超新星的前身星 显示英文标题

标题： The Progenitors of Type Ia Supernovae

摘要： Ia型超新星（SNe Ia）的模型被回顾。 结果显示，有充分的理由相信，当碳氧白矮星达到钱德拉塞卡极限并在其中心点燃碳时，SNe Ia代表了这些白矮星的热核破坏。 对前身星情景进行了批判性回顾，并明确展示了每种情景的优缺点。 认为单一演化模型目前更受青睐，其中白矮星从次巨星或巨星伴星吸积物质。 还讨论了不同模型与利用SNe Ia确定宇宙学参数的关系。 建议进行观测测试以验证这些结论。 显示英文摘要

摘要： Models for Type Ia Supernovae (SNe Ia) are reviewed. It is shown that there are strong reasons to believe that SNe Ia represent thermonuclear disruptions of C-O white dwarfs, when these white dwarfs reach the Chandrasekhar limit and ignite carbon at their centers. Progenitor scenarios are reviewed critically and the strengths and weaknesses of each scenario are explicitly presented. It is argued that single-degenerate models, in which the white dwarf accretes from a subgiant or giant companion are currently favored. The relation of the different models to the use of SNe Ia for the determination of cosmological parameters is also discussed. Observational tests of the conclusions are suggested.