论文标题
超薄瞬态SN 2006年核心的IA类型超新星
A Type Ia supernova at the heart of superluminous transient SN 2006gy
论文作者
论文摘要
超小超新星辐射的能量是正常超新星的100倍。这种能量的起源及其恒星祖细胞的性质知之甚少。我们在一个瞬态，SN 2006 gy的光谱中识别中性铁线，并表明它们需要大量铁（> 〜0.3 msun）以1500 km/s的膨胀。我们证明，标准类型的IA超新星的模型击中了一系列的偶色材料，可产生光曲线和较晚的铁率主导的频谱，使SN 2006 gy匹配。在这种情况下，祖细胞系统的共同包膜演变可以同步包膜射出和超新星爆炸，并可以解释这些明亮的瞬变。
Superluminous supernovae radiate up to 100 times more energy than normal supernovae. The origin of this energy and the nature of their stellar progenitors are poorly understood. We identify neutral iron lines in the spectrum of one such transient, SN 2006gy, and show that they require a large mass of iron (>~0.3 Msun) expanding at 1500 km/s. We demonstrate that a model of a standard Type Ia supernova hitting a shell of circumstellar material produces a light curve and late-time iron-dominated spectrum that match SN 2006gy. In such a scenario, common envelope evolution of the progenitor system can synchronize envelope ejection and supernova explosion and may explain these bright transients.
