LOSS's first supernova? New limits on the ‘impostor’ SN 1997bs
LOSS's first supernova? New limits on the ‘impostor’ SN 1997bs
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LOSS 的第一颗超新星？“冒名顶替者”SN 1997bs 的新限制
DOI：
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
C. Kochanek
中科院分区：
文献类型：
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作者：
S. Adams;C. Kochanek
我们展示了哈勃太空望远镜和斯皮策太空望远镜对原型超新星 (SN) 冒名顶替者 SN 1997bs 的最新观测结果。我们发现 SN 1997bs 仍然比它的前身暗淡得多，这对瞬态过程中喷射的壳中形成的尘埃形成的后期遮蔽的典型图像提出了挑战。这颗恒星在尘土飞扬、稳定的风后面幸存下来的可能性也不容乐观。最简单的解释是 SN 1997bs 是一颗亚光度的 IIn SN 型，尽管目前无法排除这颗恒星幸存于模糊的尘埃壳 $\gtrsim 1 M_{\odot}$ 后面或内在光度显着降低的可能性。持续监控系统是最终解决问题的最有希望的方法。
We present new, late-time Hubble Space Telescope and Spitzer Space Telescope observations of the archetypal supernova (SN) impostor SN 1997bs. We show that SN 1997bs remains much fainter than its progenitor, posing a challenge for the canonical picture of late-time obscuration by dust forming in a shell ejected during the transient. The possibility that the star survived cloaked behind a dusty, steady wind is also disfavored. The simplest explanation is that SN 1997bs was a subluminous Type IIn SN, although it is currently impossible to rule out the possibility that the star survived either behind an obscuring dusty shell $\gtrsim 1 M_{\odot}$ or with a significantly decreased intrinsic luminosity. Continued monitoring of the system is the most promising means of ultimately resolving the question.
DOI：
10.1111/j.1365-2966.2012.21317.x
发表时间：
2012-05
影响因子：
4.8
作者：
R. Chini;V. Hoffmeister;A. Nasseri;O. Stahl;H. Zinnecker
通讯作者：
R. Chini;V. Hoffmeister;A. Nasseri;O. Stahl;H. Zinnecker