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arXiv 1302.0495astro-ph.HEastro-ph.SR
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Ia型超新星的前身

Progenitors of Supernovae Type Ia

S. Toonen, G. Nelemans, M. Bours, S. Portegies Zwart, J. Claeys, N. Mennekens, A. Ruiter

摘要:

尽管Ia型超新星(SNeIa)在天体物理学的许多领域都具有重要意义,但SNeIa缺乏理论解释。标准的场景包括碳/氧白矮星接近克拉塞卡质量的热核爆炸;要么是来自伴星的吸积,要么是两颗白矮星的合并。我们调查的贡献,从两个渠道的SNIa率与二进制人口合成(BPS)代码SeBa,以约束二进制过程,如质量保留效率的WD吸积和共同的信封演变。我们确定的理论速率和延迟时间分布的SNIa祖细胞,特别是研究假设如何影响预测率。

英文摘要:

Despite the significance of Type Ia supernovae (SNeIa) in many fields in astrophysics, SNeIa lack a theoretical explanation. The standard scenarios involve thermonuclear explosions of carbon/oxygen white dwarfs approaching the Chandrasekhar mass; either by accretion from a companion or by a merger of two white dwarfs. We investigate the contribution from both channels to the SNIa rate with the binary population synthesis (BPS) code SeBa in order to constrain binary processes such as the mass retention efficiency of WD accretion and common envelope evolution. We determine the theoretical rates and delay time distribution of SNIa progenitors and in particular study how assumptions affect the predicted rates.

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