论文标题
CN昏迷21p/giacobini-Zinner的CN昏迷形态特征的分析
Analysis of CN Coma Morphology Features of Comet 21P/Giacobini-Zinner
论文作者
论文摘要
我们分析了在2018年使用窄带CN光度成像的2018年围围场通道中彗星21p/giacobini-Zinner（21p/gz）中发现的喷气功能，以确定彗星的旋转时期，并通过分析Azimutal促进了形式的旋转速度和旋转状态来限制CN气体流出速度和旋转状态。我们发现21p/gz的期限为7.39 $ \ pm $ 0.01或10.66 $ \ pm $ 0.01小时。我们测量了730 $ \ pm $ 30 m s $^{ - 1} $的北部喷气机的流速速度的下限，以及740 $ \ pm $ 30 m s $ s $ s $^{ - 1} $的南部喷气机。我们分析了喷气机的形态，并确定北部喷气机具有开瓶器模式，并利用该知识来确定旋转极位置，以$ {169^{+28} _ { - 23}} _ { - 23}}}^{\ cripc} $的右提升，$ {73^} $ {73^^{73^{+5} _}不确定的旋转感。
We analyze jet features found in the coma of Comet 21P/Giacobini-Zinner (21P/GZ) during its 2018 perihelion passage using narrowband CN photometric imaging in order to determine the comet's rotational period, and constrain the CN gas outflow velocity and rotational state through the analysis of azimuthally enhanced morphological features. We find that 21P/GZ has a period of either 7.39 $\pm$ 0.01 or 10.66 $\pm$ 0.01 hours. We measure a lower limit to the outflow velocity for the Northern Jet of 730 $\pm$ 30 m s$^{-1}$ and for the Southern Jet of 740 $\pm$ 30 m s$^{-1}$. We analyze the morphologies of the jet features and determine that the Northern jet possesses a corkscrew pattern, and utilize that knowledge to determine a rotational pole position at a Right Ascension of ${169^{+28}_{-23}}^{\circ}$ and a Declination of ${73^{+5}_{-11}}^{\circ}$, with undetermined sense of rotation.
