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首页> 外文期刊>The Astrophysical journal >A DETAILED SPATIOKINEMATIC MODEL OF THE CONICAL OUTFLOW OF THE MULTIPOLAR PLANETARY NEBULA NGC?7026
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A DETAILED SPATIOKINEMATIC MODEL OF THE CONICAL OUTFLOW OF THE MULTIPOLAR PLANETARY NEBULA NGC?7026

机译:多极行星状星云NGC?7026锥形出口的详细空间动力学模型

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We present extensive, long-slit, high-resolution coverage of the complex planetary nebula (PN) NGC?7026. We acquired 10 spectra using the Manchester Echelle Spectrometer at San Pedro Martir Observatory in Baja California, Mexico, and each shows exquisite detail, revealing the intricate structure of this object. Incorporating these spectra into the three-dimensional visualization and kinematic program SHAPE and using Hubble Space Telescope images of NGC?7026, we have produced a detailed structural and kinematic model of this PN. NGC?7026 exhibits remarkable symmetry consisting of three lobe pairs and four sets of knots, all symmetrical about the nucleus and displaying a conical outflow. Comparing the three-dimensional structure of this nebula to recent XMM-Newton X-ray observations, we investigate the extended X-ray emission in relation to the nebular structure. We find that the X-ray emission, while confined to the closed, northern lobes of this PN, shows an abrupt termination in the middle of the southeast lobe, which our long slit data show to be open. This is where the shocked fast wind seems to be escaping the interior of the nebula and the X-ray emission rapidly cools in this region.
机译:我们介绍了复杂行星状星云(PN)NGC?7026的广泛,长缝,高分辨率覆盖范围。我们使用位于墨西哥下加利福尼亚州圣佩德罗玛蒂尔天文台的曼彻斯特埃歇尔光谱仪获得了10个光谱,每个光谱均显示出精美的细节,揭示了该物体的复杂结构。将这些光谱合并到三维可视化和运动学程序SHAPE中,并使用NGC?7026的哈勃太空望远镜图像,我们生成了该PN的详细结构和运动学模型。 NGC?7026表现出显着的对称性,由三对波瓣和四组结组成,它们都围绕原子核对称并显示出锥形流出。将该星云的三维结构与最近的XMM-Newton X射线观测进行比较,我们研究了与星云结构有关的扩展X射线发射。我们发现,X射线辐射虽然局限于该PN封闭的北瓣,但在东南瓣的中部突然终止,我们的长缝数据表明是开放的。在这里,猛烈的狂风似乎正在逸出星云内部,并且X射线发射在该区域迅速冷却。

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