We report near-infrared integral field spectroscopic observations of the active galactic nucleus NGC 4151 with archive data from the NIFS-Gemini North Telescope. We have selected best-seeing observations ($\lesssim$0.3 arcsec) that, allied to our methodology of image processing techniques, show structures with spatial resolution comparable to those of the HST. The intricate outflow of NGC 4151 is revisited in light of the results found for NGC 1068, in a previous work, and a very similar dynamic is found: the low-velocity [Fe II] emission depicts the glowing walls of an hourglass structure, while the high-velocity gas fills its volume. From this finding, we show that the misalignment between the jet and the NLR is not a projection effect, as previously thought. A molecular outflow is detected for the first time in this galaxy and, just like in NGC 1068, the transition between the molecular and the ionized gas phases comes from the fragmentation of molecular cavity walls into bullets of ionized gas exposed to the central source. Furthermore, it is suggestive that the same geometrical dichotomy between the cones seen in NGC 1068 is found here, with one side, where the cavity is disrupted by the AGN, being more extended than the other. Finally, a new spatial correlation between the high-velocity [Fe II] and the soft X-ray emission of [Ne IX] is found, which is unexpected given the difference between their ionization potentials.

中文翻译：

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NGC 4151 的核结构：根据 NGC 1068 走向普遍外流机制

我们报告了活动星系核 NGC 4151 的近红外积分场光谱观测以及来自 NIFS-双子座北望远镜的档案数据。我们选择了最佳观察结果（$\lesssim$0.3 arcsec），结合我们的图像处理技术方法，显示具有与 HST 相当的空间分辨率的结构。根据在之前的工作中为 NGC 1068 发现的结果重新审视 NGC 4151 的复杂流出，并发现了非常相似的动态：低速 [Fe II] 发射描绘了沙漏结构的发光壁，而高速气体充满了它的体积。根据这一发现，我们表明射流和 NLR 之间的未对准并不是之前认为的投影效应。在这个星系中首次检测到分子外流，并且，就像在 NGC 1068 中一样，分子和电离气相之间的转变来自分子腔壁的碎裂成暴露于中心源的电离气体子弹。此外，这表明在 NGC 1068 中看到的锥体之间存在相同的几何二分法，其中一侧的空腔被 AGN 破坏，比另一侧延伸得更多。最后，发现了高速 [Fe II] 和 [Ne IX] 的软 X 射线发射之间的新空间相关性，考虑到它们的电离势之间的差异，这是出乎意料的。这表明在 NGC 1068 中看到的锥体之间存在相同的几何二分法，其中一侧的空腔被 AGN 破坏，比另一侧延伸得更多。最后，发现了高速 [Fe II] 和 [Ne IX] 的软 X 射线发射之间的新空间相关性，考虑到它们的电离势之间的差异，这是出乎意料的。这表明在 NGC 1068 中看到的锥体之间存在相同的几何二分法，其中一侧的空腔被 AGN 破坏，比另一侧延伸得更多。最后，发现了高速 [Fe II] 和 [Ne IX] 的软 X 射线发射之间的新空间相关性，考虑到它们的电离势之间的差异，这是出乎意料的。