点对称猫眼NGC 6543的形态运动学模拟：旋进喷流的环状残留物
Morphokinematic modelling of the point-symmetric Cat's Eye, NGC 6543: Ring-like remnants of a precessing jet
摘要：
被称为猫眼星云（NGC 6543）的行星状星云具有复杂的点对称形态，无法用目前的行星状星云形成理论--相互作用恒星风模型来完全解释。为了揭示猫眼星云的三维（3D）结构，我们使用哈勃太空望远镜的[NII]图像和使用SHAPE代码的五个不同位置-速度图创建了该星云的详细3D形态运动学模型。这种建模方法揭示了点对称的部分环，这可能是由旋进射流形成的。
英文摘要：
The planetary nebula known as the Cat's Eye Nebula (NGC 6543) has a complex, point-symmetric morphology that cannot be fully explained by the current theory of planetary nebula formation, the Interacting Stellar Winds Model. In order to reveal the three dimensional (3D) structure of the Cat's Eye Nebula, we created a detailed 3D morpho-kinematic model of this nebula using a [NII] image from the Hubble Space Telescope and five different position-velocity diagrams using the SHAPE code. This modeling approach has revealed point-symmetric partial rings, which were likely formed by a precessing jet.
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