iPTF13bvn: THE FIRST EVIDENCE OF A BINARY PROGENITOR FOR A TYPE Ib SUPERNOVA
iPTF13bvn: THE FIRST EVIDENCE OF A BINARY PROGENITOR FOR A TYPE Ib SUPERNOVA
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DOI：
10.1088/0004-6256/148/4/68
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
M. Bersten;O. Benvenuto;G. Folatelli;K. Nomoto;H. Kuncarayakti;S. Srivastav;G. Anupama;R. Quimby;D. Sahu
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文献类型：
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作者：
M. Bersten;O. Benvenuto;G. Folatelli;K. Nomoto;H. Kuncarayakti;S. Srivastav;G. Anupama;R. Quimby;D. Sahu
最近在哈勃太空望远镜的档案图像中发现了超新星iPTF 13 bvn位置的物体，这可能是Ib型超新星前身的第一个直接证据。该天体的光度测量结果与沃尔夫-拉叶超新星爆发前的星星质量为1.11兆兆的恒星相一致。然而，基于流体动力学模型，我们表明，祖先有一个前SN的质量为3.5 M的潮汐，它不可能大于3.8 M的潮汐。我们提出了一个相互作用的二元系统作为SN祖和执行进化计算，能够自我一致地解释光变曲线的形状，没有氢，和前SN测光。我们进一步讨论了允许的双星系统的范围，并预测剩余的伴星是一个发光的O型星星，其光学通量明显低于前SN天体。未来对这样一颗星星的探测是可能的，并将为Ib型SN的祖先系统提供第一个可靠的识别。
The recent detection in archival Hubble Space Telescope images of an object at the location of supernova (SN) iPTF13bvn may represent the first direct evidence of the progenitor of a Type Ib SN. The object's photometry was found to be compatible with a Wolf–Rayet pre-SN star mass of ≈11 M☉. However, based on hydrodynamical models, we show that the progenitor had a pre-SN mass of ≈3.5 M☉ and that it could not be larger than ≈8 M☉. We propose an interacting binary system as the SN progenitor and perform evolutionary calculations that are able to self-consistently explain the light curve shape, the absence of hydrogen, and the pre-SN photometry. We further discuss the range of allowed binary systems and predict that the remaining companion is a luminous O-type star of significantly lower flux in the optical than the pre-SN object. A future detection of such a star may be possible and would provide the first robust identification of a progenitor system for a Type Ib SN.