AI 中文总结
提出一种基于多示踪剂堆叠运动学的IFS分解方法，成功分离NGC 5728中的恒星形成环与AGN外流，为活动星系复杂发射线结构提供通用分解框架。
AI 中文摘要
活动星系核（AGN）中心千秒差距范围内的积分场光谱（IFS）揭示了来自恒星形成和AGN反馈激发星际介质的空间重合发射的混合。由于大多数光谱示踪剂受这两种过程的影响，解开这些成分仍然是一个挑战，限制了对运动学和能量的可靠解释。我们提出了一种新的框架，基于多示踪剂、堆叠运动学方法，在逐空间像素（spaxel）基础上将IFS数据分解为不同的成分。该方法结合了运动学建模与每个空间像素的流量分解，量化了视场中每个成分的贡献。我们将此方法应用于来自星系活动、环面和外流巡天（GATOS）的塞弗特星系NGC 5728的JWST IFS观测，分析了十二条中红外精细结构谱线（4.49 < λ < 25.89 μm，7.9 < IP < 126.2 eV）。我们发现环核发射可以分解为两个主要成分：一个恒星形成环和一个AGN驱动的双锥外流。我们的方法分离了这些结构并恢复了它们的详细空间形态。该框架为IFS数据中物理动机的成分分离提供了一种通用且可扩展的方法，适用于多种波长范围和目标，能够可靠解释活动星系及其他复杂发射线结构（或形态）。
英文摘要
Integral field spectroscopy (IFS) of the central kiloparsecs of active galactic nuclei (AGN) reveals a mixture of spatially coincident emission from star-formation and AGN feedback exciting the interstellar medium. Disentangling these components remains a challenge, as most spectral tracers are affected by both processes, limiting robust interpretation of kinematics and energetics. We present a new framework for decomposing IFS data into distinct components on a spaxel-by-spaxel basis using a multi-tracer, stacked kinematics approach. This method combines kinematic modelling with imposed flux decomposition per spaxel, quantifying the contribution of each component across the field of view. We apply this method to JWST IFS observations of the Seyfert galaxy NGC 5728 from the Galaxy Activity, Torus, and Outflow Survey (GATOS), analysing twelve mid-infrared fine-structure lines (4.49 < $λ$ < 25.89 $μ$m, 7.9 < IP < 126.2 eV). We find that the circumnuclear emission can be decomposed into two dominant components: a star-forming ring and an AGN-driven biconical outflow. Our method separates these structures and recovers their detailed spatial morphology. This framework provides a general and scalable method for physically motivated component separation in IFS data, applicable across many wavelength ranges and targets, enabling reliable interpretation of complex emission line structures (or morphologies) in active galaxies and beyond.
Comments7 pages, 2 figures, MNRAS Letters submitted, Supplementary material available as an ancillary file
