Nucleosynthesis of the Elements in Faint Supernovae and Hypernovae

Nucleosynthesis of the Elements in Faint Supernovae and Hypernovae
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DOI:
10.1017/s1743921310000128
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发表时间:
2009-08
期刊:
Proceedings of the International Astronomical Union
影响因子:
--
通讯作者:
K. Nomoto;T. Moriya;N. Tominaga
K. Nomoto;T. Moriya;N. Tominaga
中科院分区:
其他
文献类型:
--
作者:
K. Nomoto;T. Moriya;N. Tominaga

文献摘要

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摘要 我们回顾了超新星(SNe)的性质与前身质量M的关系。(1)Mup - 10 M⊙星是超AGB星,由此产生的电子俘获SNe可能是像IIn SN 2008S这样的微弱超新星。 (2) 10 - 12 M⊙ 恒星经历铁核塌缩形成中子星(NSs)和微弱超新星。 (3) 12 M⊙ - MBN 星经历铁核塌缩形成 NS 和正常的核心塌缩超新星。 (4) MBN - 90 M⊙ 恒星经历铁核塌缩形成黑洞。由此产生的超新星分为超新星和微弱超新星。 SN 2008ha 观测到的特性可以用这种微弱超新星来解释。 (5) 90 - 140 M⊙ 恒星产生发光超新星,如超新星 2007bi 和 2006gy。 (6) 140 - 300 M⊙ 恒星成为不稳定对超新星,可能是发光超新星(SNe 2007bi 和 2006gy)。 (7) M≳300M⊙的超大质量恒星经历核心塌缩形成中等质量黑洞。有些超新星可能是更明亮的超新星(如 SN 2006gy)。
Abstract We review the properties of supernovae (SNe) as a function of the progenitor's mass M. (1) Mup - 10 M⊙ stars are super-AGB stars and resultant electron capture SNe may be Faint supernovae like Type IIn SN 2008S. (2) 10 - 12 M⊙ stars undergo Fe-core collapse to form neutron stars (NSs) and Faint supernovae. (3) 12 M⊙ - MBN stars undergo Fe-core collapse to form NSs and normal core-collapse supernovae. (4) MBN - 90 M⊙ stars undergo Fe-core collapse to form Black Holes. Resultant supernovae are bifurcate into Hypernovae and Faint supernovae. The observed properties of SN 2008ha can be explained with this type of Faint supernovae. (5) 90 - 140 M⊙ stars produce Luminous SNe, like SNe 2007bi and 2006gy. (6) 140 - 300 M⊙ stars become pair-instability supernovae which could be Luminous supernovae (SNe 2007bi and 2006gy). (7) Very massive stars with M ≳ 300 M⊙ undergo core-collapse to form intermediate mass black holes. Some SNe could be more Luminous supernovae (like SN 2006gy).