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arXiv 0707.2187astro-ph
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核坍缩超新星的核合成与GRB --贫金属星型接法

Nucleosynthesis in Core-Collapse Supernovae and GRB--Metal-Poor Star Connection

K. Nomoto, N. Tominaga, M. Tanaka, K. Maeda, H. Umeda

摘要:

本文综述了不同恒星质量、爆炸能量和金属丰度的核塌缩超新星(SNe)的核合成产额。与贫金属恒星丰度模式的比较为检验爆炸模型及其核合成提供了极好的机会。我们表明,极贫金属(EMP)恒星的丰度模式,例如,C、Co、Zn相对于Fe的过量与高能爆炸(Hypernovae,HNe)而不是正常超新星的产额更好地一致。我们注意到,EMP星丰度分布的变化与超新星-伽玛暴联系的多样性有关。我们总结了(1)GRB-SNe,(2)Non-GRB HNe/SNe,(3)XRF-SN,(4)Non-SN GRB的不同性质。特别是,非SN伽玛暴(暗超新星)已被预测,以解释富C EMP星的起源。我们表明,这些变化和连接可以模拟在一个统一的方式与相对论射流引起的爆炸。最后,我们检查是否最明亮的超新星2006 gy可以一贯的对不稳定超新星模型的解释。

英文摘要:

We review the nucleosynthesis yields of core-collapse supernovae (SNe) for various stellar masses, explosion energies, and metallicities. Comparison with the abundance patterns of metal-poor stars provides excellent opportunities to test the explosion models and their nucleosynthesis. We show that the abundance patterns of extremely metal-poor (EMP) stars, e.g., the excess of C, Co, Zn relative to Fe, are in better agreement with the yields of hyper-energetic explosions (Hypernovae, HNe) rather than normal supernovae. We note that the variation of the abundance patterns of EMP stars are related to the diversity of the Supernova-GRB connection. We summarize the diverse properties of (1) GRB-SNe, (2) Non-GRB HNe/SNe, (3) XRF-SN, and (4) Non-SN GRB. In particular, the Non-SN GRBs (dark hypernovae) have been predicted in order to explain the origin of C-rich EMP stars. We show that these variations and the connection can be modeled in a unified manner with the explosions induced by relativistic jets. Finally, we examine whether the most luminous supernova 2006gy can be consistently explained with the pair-instability supernova model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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