CONSTRAINING THE SPIN-DOWN TIMESCALE OF THE WHITE DWARF PROGENITORS OF TYPE Ia SUPERNOVAE
CONSTRAINING THE SPIN-DOWN TIMESCALE OF THE WHITE DWARF PROGENITORS OF TYPE Ia SUPERNOVAE
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DOI：
10.1088/2041-8205/778/2/l35
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发表时间：
2013-11
期刊：
影响因子：
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通讯作者：
X. Meng;P. Podsiadlowski
中科院分区：
文献类型：
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作者：
X. Meng;P. Podsiadlowski
Justham和Di Stefano等人。提出了Ia型超新星(SNIa)的白矮星前体可能需要向下旋转才能爆炸。由于白矮星自旋时间标度在理论上还不是很清楚，这里我们试图(在这个自旋下降模型的框架内)对含有巨型施主的先驱系统进行经验约束，并在爆炸后探测到其外双星物质：我们得到了几个107年的上限。基于Di Stefano&Kilic的研究，这意味着现在排除SNR0509−67.5中存在幸存的伴星还为时过早。
Justham and Di Stefano et al. proposed that the white dwarf progenitor of a Type Ia supernova (SN Ia) may have to spin down before it can explode. As the white dwarf spin-down timescale is not well known theoretically, here we try to constrain it empirically (within the framework of this spin-down model) for progenitor systems that contain a giant donor and for which circumbinary material has been detected after the explosion: we obtain an upper limit of a few 107yr. Based on the study of Di Stefano & Kilic, this means that it is too early to rule out the existence of a surviving companion in SNR 0509−67.5.