PREDICTING THE AMOUNT OF HYDROGEN STRIPPED BY THE SN EXPLOSION FOR SN 2002cx-LIKE SNe Ia

PREDICTING THE AMOUNT OF HYDROGEN STRIPPED BY THE SN EXPLOSION FOR SN 2002cx-LIKE SNe Ia
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预测 SN 2002cx-LIKE SNe Ia 因 SN 爆炸而剥离的氢气量

DOI:
10.1088/0004-637x/778/2/121
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发表时间:
2013-10
影响因子:
4.9
通讯作者:
Han, Z. W.
Han, Z. W.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Liu, Zheng-Wei;Kromer, M.;Fink, M.;Pakmor, R.;Roepke, F. K.;Chen, X. F.;Wang, B.;Han, Z. W.

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Ia型超新星(SNe Ia)最受欢迎的祖先方案包括单简并(SD)方案和双简并方案。在超新星Ia的星云光谱中没有剥离的氢(H),这对SD祖先模型提出了挑战。最近的研究表明,偏离中心点燃的质量为1000亿克拉塞卡的白色矮星的纯爆燃爆炸模型,很好地再现了2002年类Cx超新星Ia的特征观测特征。在这项工作中,我们预测,第一次,剥离的H的偏心,纯爆燃爆炸的量。我们发现,它们的低动能导致效率低的H质量剥离(10.01 M返),这表明剥离的H可能隐藏在(观察到的)晚时间光谱的SN 2002cx类超新星Ia。
The most favored progenitor scenarios for Type Ia supernovae (SNe Ia) involve the single-degenerate (SD) scenario and the double-degenerate scenario. The absence of stripped hydrogen (H) in the nebular spectra of SNe Ia challenges the SD progenitor models. Recently, it was shown that pure deflagration explosion models of Chandrasekhar-mass white dwarfs, ignited off-center, reproduce the characteristic observational features of 2002cx-like SNe Ia very well. In this work we predict, for the first time, the amount of stripped H for the off-center, pure deflagration explosions. We find that their low kinetic energies lead to inefficient H mass stripping (≲ 0.01 M☉), indicating that the stripped H may be hidden in (observed) late-time spectra of SN 2002cx-like SNe Ia.
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