论文标题
通过高分散积分田间光谱在内而外，在内而外的born式星云中发现了快速扩张的外壳
Discovery of a Fast Expanding Shell in the Inside-out Born-Again Planetary Nebula HuBi 1 Through High-Dispersion Integral Field Spectroscopy
论文作者
论文摘要
已提议Hubi 1是稀有的重生星云（PNE）的稀有类别的成员，即，其中央恒星经历了非常晚的热脉冲，并在富含氢的PN内的高速弹出了高速加工的材料。在这封信中，我们介绍了Hubi 1在高光谱分辨率上的最内向区域的GTC Megara积分田间光谱观察$ \ simeq16 $ km S $ s $^{ - 1} $和Multi-Epoch sub-arcsec图像获得了$ \ simeq 12 $ yr yr yr yr yr yr yr。对这些数据的分析表明，Hubi 1的内部区域被驱逐出$ \ simeq200 $ y年前，并以速度$ \ simeq300 $ km s $ s $^{ - 1} $扩展，与出生的差异方案非常同意。此处使用的GTC Megara高分散观测的前所未有的层析成绩表明，与其他born-again again pne中弹射器的破坏磁盘和喷射磁盘和喷气形态相比，Hubi 1中的喷射具有类似壳的结构。
HuBi 1 has been proposed to be member of the rare class of born-again planetary nebulae (PNe), i.e., its central star experienced a very late thermal pulse and ejected highly-processed material at high speeds inside the old hydrogen-rich PN. In this letter we present GTC MEGARA integral field spectroscopic observations of the innermost regions of HuBi 1 at high spectral resolution $\simeq16$ km s$^{-1}$ and multi-epoch sub-arcsec images obtained $\simeq 12$ yr apart. The analysis of these data indicates that the inner regions of HuBi 1 were ejected $\simeq200$ yr ago and expand at velocities $\simeq300$ km s$^{-1}$, in excellent agreement with the born-again scenario. The unprecedented tomographic capabilities of the GTC MEGARA high-dispersion observations used here reveal that the ejecta in HuBi 1 has a shell-like structure, in contrast to the disrupted disk and jet morphology of the ejecta in other born-again PNe.
