论文标题
空间解决的电离流出流延伸至$ \ sim $ 2 kpc in Seyfert 1 Galaxy NGC 7469由VLT/MUSE揭示
Spatially Resolved Ionized Outflows Extending to $\sim$2 kpc in Seyfert 1 Galaxy NGC 7469 Revealed by VLT/MUSE
论文作者
论文摘要
Seyfert 1 Galaxy NGC 7469具有突出的核星爆环和发光的活性银核（AGN）。在先前的工作中发现了最内向核区域流出的证据。我们使用档案VLT/MUSE和{\ em Chandra}观测值在银河系中大规模检测离子气体流出。使用两个高斯组件对光学发射线进行建模，并采用非参数方法来测量[O III]和$ \ rmHα$发射气体的运动学。线比诊断和空间解析的图得出来检查流出的起源。 [O III]的KPC尺度运动学以蓝光分量为主，而$ \ rmHα$的速度图显示具有复杂非旋转子结构的旋转磁盘。证实了周围环环形环的恒星风，我们发现从细胞核中延伸至径向距离为$ \ rm \ sim2 $ kpc的径向距离的证据，其形态与几乎面对面的电离锥保持一致。先前报道的核流流出类似于明亮基础的一部分。我们得出了Starburst风和AGN驱动的流出的质量和能量流出速率。 KPC-Scale AGN流出的估计动力学耦合效率为$ \ dot {e} _ {\ rm out}/l _ {\ rm bol} \ sim 0.1 \％$，低于```''$ $ $ $，低于```'''两步模型的阈值。我们的结果增强了空间解决的研究对解散反馈的重要性，在黑洞和星系生长的宇宙中午，AGN和Starburst共存的反馈是很常见的。
The Seyfert 1 galaxy NGC 7469 possesses a prominent nuclear starburst ring and a luminous active galactic nucleus (AGN). Evidence of an outflow in the innermost nuclear region has been found in previous works. We detect the ionized gas outflow on a larger scale in the galaxy using the archival VLT/MUSE and {\em Chandra} observations. The optical emission lines are modeled using two Gaussian components, and a non-parametric approach is applied to measure the kinematics of [O III] and $\rm Hα$ emitting gas. Line ratio diagnostics and spatially resolved maps are derived to examine the origin of the outflow. The kpc-scale kinematics of [O III] is dominated by a blueshifted component whereas velocity map of $\rm Hα$ shows a rotational disk with complex non-rotational substructure. The starburst wind around the circumnuclear ring is confirmed, and we find evidence of an AGN-driven outflow extending to a radial distance of $\rm \sim2$ kpc from the nucleus, with a morphology consistent with a nearly face-on ionization cone. The previously reported circumnuclear outflow resembles part of the bright base. We derive mass and energy outflow rates for both the starburst wind and the AGN-driven outflow. The estimated kinetic coupling efficiency of the kpc-scale AGN outflow is $\dot{E}_{\rm out}/L_{\rm bol}\sim 0.1\%$, lower than the threshold predicted by the ``two-stage'' theoretical model for effective feedback. Our results reinforce the importance of spatially resolved study to disentangle feedback where AGN and starburst coexist, which may be common during the cosmic noon of black hole and galaxy growth.
