标题： 超剥离超新星的前身星 显示英文标题

标题： Progenitors of ultra-stripped supernovae

摘要： 密近双星中超贫金属星的爆炸可能解释了弱而快速光学暂现源的新发现。 我们已经证明，中子星（NSs）的氦星伴星在爆炸时可能会演化为裸露的金属核心，质量低至约1.5倍太阳质量，仅略高于钱德拉塞卡质量极限。 在这里，我们提出了一项关于导致此类超贫金属超新星（SNe）前身演化的新系统性研究，在某些情况下，爆炸前包层的质量小于0.01倍太阳质量。 我们讨论了这些超新星的性质（电子俘获还是铁核塌缩）及其观测光变曲线特性。 超贫金属超新星对于双脉冲星以及LIGO/VIRGO探测合并中子星的引力波事件高度相关，因为这些事件预计会在1.10-1.80倍太阳质量范围内主要产生低踢速中子星。 显示英文摘要

摘要： The explosion of ultra-stripped stars in close binaries may explain new discoveries of weak and fast optical transients. We have demonstrated that helium star companions to neutron stars (NSs) may evolve into naked metal cores as low as ~1.5 Msun, barely above the Chandrasekhar mass limit, by the time they explode. Here we present a new systematic investigation of the progenitor evolution leading to such ultra-stripped supernovae (SNe), in some cases yielding pre-SN envelopes of less than 0.01 Msun. We discuss the nature of these SNe (electron-capture vs iron core-collapse) and their observational light-curve properties. Ultra-stripped SNe are highly relevant for binary pulsars, as well as gravitational wave detection of merging NSs by LIGO/VIRGO, since these events are expected to produce mainly low-kick NSs in the mass range 1.10-1.80 Msun.