HSC16aayt: A Slowly Evolving Interacting Transient Rising for More than 100 Days
HSC16aayt: A Slowly Evolving Interacting Transient Rising for More than 100 Days
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DOI：
10.3847/1538-4357/ab2f80
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发表时间：
2019-07
期刊：
影响因子：
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通讯作者：
T. Moriya;Masaomi Tanaka;T. Morokuma;Yen-Chen Pan;R. Quimby;Jiachen Jiang;Kojiro Kawana;K. Maeda-K.-M
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文献类型：
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作者：
T. Moriya;Masaomi Tanaka;T. Morokuma;Yen-Chen Pan;R. Quimby;Jiachen Jiang;Kojiro Kawana;K. Maeda-K.-M
我们报告了我们对HSC 16 aayt（SN 2016 jiu）的观察，这是由斯巴鲁/Hyper Suprime-Cam（HSC）瞬态调查发现的，作为斯巴鲁战略计划的一部分。它的光度演化非常缓慢，上升时间超过100天。400天内的光学星等变化保持在0.6等以内，光谱显示出一条很强的窄发射线，我们把它归类为IIn型超新星。从光谱上测得HSC 16 aayt的红移为0.6814 ± 0.0002。它的宿主星系中心距离超新星位置5 kpc，HSC 16 aayt可能是另一个孤立的IIn型超新星的例子，尽管不排除宿主星系在超新星位置可能存在潜在的恒星形成活动。
We report our observations of HSC16aayt (SN 2016jiu), which was discovered by the Subaru/Hyper Suprime-Cam (HSC) transient survey conducted as part of the Subaru Strategic Program. It shows very slow photometric evolution and its rise time is more than 100 days. The optical magnitude change in 400 days remains within 0.6 mag. Spectra of HSC16aayt show a strong narrow emission line and we classify it as a Type IIn supernova. The redshift of HSC16aayt is 0.6814 ± 0.0002 from the spectra. Its host galaxy center is at 5 kpc from the supernova location and HSC16aayt might be another example of isolated Type IIn supernovae, although the possible existence of underlying star-forming activity of the host galaxy at the supernova location is not excluded.