ULTRA-STRIPPED TYPE Ic SUPERNOVAE FROM CLOSE BINARY EVOLUTION
ULTRA-STRIPPED TYPE Ic SUPERNOVAE FROM CLOSE BINARY EVOLUTION
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DOI：
10.1088/2041-8205/778/2/l23
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发表时间：
2013-10
期刊：
影响因子：
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通讯作者：
T. Tauris;N. Langer;T. Moriya;P. Podsiadlowski;S.-C. Yoon;S. Blinnikov
中科院分区：
文献类型：
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作者：
T. Tauris;N. Langer;T. Moriya;P. Podsiadlowski;S.-C. Yoon;S. Blinnikov
最近发现的微弱和快速的光学瞬变引起了他们的起源问题。我们研究了Ic型超新星核心坍缩的最小喷出物质量。我们表明，从氦星星到致密伴星的质量转移可以产生一个超剥离的核心，经历铁芯崩溃，并导致一个非常快速和微弱的SN Ic。在这封信中，给出了一个详细的例子，其中前SN恒星的质量仅略高于克拉塞卡极限，导致仅喷射出0.05-0.20 M的物质，并形成低质量的中子星星（NS）。我们计算了这种情况的合成光变曲线，并证明SN 2005 ek可以用我们的模型来解释。我们估计，这种超剥离对所有SNe的比例可能高达10−3-10−2。最后，我们认为某些双NS系统（例如，双脉冲星PSR J 0737 - 3039 B）的第二次爆炸可能与超剥离的SN Ic有关。
Recent discoveries of weak and fast optical transients raise the question of their origin. We investigate the minimum ejecta mass associated with core-collapse supernovae (SNe) of Type Ic. We show that mass transfer from a helium star to a compact companion can produce an ultra-stripped core which undergoes iron core collapse and leads to an extremely fast and faint SN Ic. In this Letter, a detailed example is presented in which the pre-SN stellar mass is barely above the Chandrasekhar limit, resulting in the ejection of only ∼0.05–0.20 M☉ of material and the formation of a low-mass neutron star (NS). We compute synthetic light curves of this case and demonstrate that SN 2005ek could be explained by our model. We estimate that the fraction of such ultra-stripped to all SNe could be as high as 10−3–10−2. Finally, we argue that the second explosion in some double NS systems (for example, the double pulsar PSR J0737−3039B) was likely associated with an ultra-stripped SN Ic.