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arXiv 1510.02483astro-ph.SRastro-ph.HE
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密近双星中剥离核坍缩超新星的模拟

Simulations of stripped core-collapse supernovae in close binaries

Alex Rimoldi, Simon Portegies Zwart, Elena Maria Rossi

摘要:

我们进行平滑粒子流体动力学模拟的爆炸的氦星在一个紧密的双星系统,并研究爆炸的影响的伴星,以及对超新星遗迹上的同伴的存在的影响。通过模拟超新星从核心反弹到残余壳通过恒星伴星的机制,我们能够分离导致最终系统参数的各种影响。在最后一个系统中,我们测量了伴星的质量剥离和烧蚀,以及伴星的速度反冲,以及超新星壳的结构。伴星的存在在膨胀的超新星遗迹中产生了一个圆锥形的空腔,伴星物质的损失导致超新星遗迹的一侧更富含金属,而空腔周围更富含氢(来自伴星物质)。在从伴星中移除质量之后,我们研究了它随后的演化,并将其与未受到超新星撞击的单颗恒星进行比较。

英文摘要:

We perform smoothed-particle hydrodynamical simulations of the explosion of a helium star in a close binary system, and study the effects of the explosion on the companion star as well as the effect of the presence of the companion on the supernova remnant. By simulating the mechanism of the supernova from just after core bounce until the remnant shell passes the stellar companion, we are able to separate the various effects leading to the final system parameters. In the final system, we measure the mass stripping and ablation from, and the velocity kick imparted to, the companion star, as well as the structure of the supernova shell. The presence of the companion star produces a conical cavity in the expanding supernova remnant, and loss of material from the companion causes the supernova remnant to be more metal-rich on one side and more hydrogen-rich (from the companion material) around the cavity. Following the removal of mass from the companion, we study its subsequent evolution and compare it with a single star not subjected to a supernova impact.

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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