Formation scenario of the progenitor of iPTF13bvn revisited
Formation scenario of the progenitor of iPTF13bvn revisited
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DOI：
10.1093/mnras/stw3321
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发表时间：
2016-12
影响因子：
4.8
通讯作者：
R. Hirai
中科院分区：
文献类型：
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作者：
R. Hirai
已经重新研究了iPTF 13 bvn的前体的形成情况。iPTF 13 bvn是独一无二的，因为它有一张超新星爆发前的影像。这使我们能够强有力地限制其祖先的性质。从超新星爆发前的影像、光变曲线和最新的观测结果来看，目前普遍认为iPTF 13 bvn的前身是一个双星系统。光变曲线的快速下降表明其前身质量为$\sim3.5M_\odot$，剩余伴星的上限为$\sim20M_\odot$。最近的工作表明，包含共同包络情节的二元演化模型可以满足所有的观测约束。我们已经研究了共同信封的情况下，共同信封演变的最新知识的基础上。我们已经发现，共同的包络的情况下，祖先的iPTF 13 bvn似乎是不合适的，因为它不能解释前超新星半径。我们还提出了一个黑洞伴侣的替代模型。进行了有一个大黑洞伴星的恒星演化计算，并成功地满足了所有观测约束。然而，应该进行更多的研究来解释大黑洞同伴的起源。
The formation scenario of the progenitor of iPTF13bvn has been revisited. iPTF13bvn is unique in the sense that a corresponding pre-supernova image has been identified. This has enabled us to strongly constrain the nature of its progenitor. From the pre-supernova image, light curve and the latest observations, it is currently widely accepted that the progenitor of iPTF13bvn was in a binary system. The fast decline in the light curve suggests a progenitor mass of $\sim3.5M_\odot$, and the upper limit on the remaining companion is $\sim20M_\odot$. Recent works suggest that binary evolution models involving common envelope episodes can satisfy all the observational constraints. We have examined the common envelope scenario based on latest knowledges on common envelope evolution. We have found that the common envelope scenario for the progenitor of iPTF13bvn seems not to be suitable since it can not explain the pre-supernova radius. We also propose an alternative model with a black hole companion. Stellar evolution calculations with a large black hole companion were carried out and succeeded in satisfying all observational constraints. However, more studies should be carried out to explain the origin of the large black hole companion.