X射线到中红外光谱能量分布：XMM-COSMOS巡天中X射线选择的AGN星表
X-ray to Mid-IR Spectral Energy Distributions: A Catalog of X-ray Selected AGNs in the XMM-COSMOS Survey
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- Sabancı University（萨巴恩奇大学）
- The George Washington University（乔治华盛顿大学）
- İstanbul University（伊斯坦布尔大学）
- Türkiye National Observatories（土耳其国家天文台）
- The Pennsylvania State University（宾夕法尼亚州立大学）
机构由 AI 辅助整理，请以论文原文为准。
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中文总结 AI 辅助
本研究对104个X射线选择的1型AGN进行SED成分分解，结合JWST/NIRCam数据减少宿主星系污染，揭示核红外与X射线光度间更陡的相关关系，并归因于星光稀释效应。
中文摘要 AI 辅助
我们展示了104个光谱确认的1型活动星系核（AGN）样本中红外与X射线联系的成分分解分析。通过结合XMM、Swift/UVOT以及针对部分源的新高角分辨率JWST/NIRCam成像，我们构建了详细的谱能量分布（SED），其中红外发射被明确分解为吸积盘、环状尘埃和极向尘埃三个成分。这种方法使我们能够以最小的宿主星系污染分离出内在的AGN红外光度，从而对吸积流、核周尘埃和X射线日冕之间的物理关系进行清晰评估。通过将JWST/NIRCam观测纳入我们的SED分解，我们显著减少了宿主星系污染，并以更高的保真度分离了核红外发射，尤其是在近红外（NIR）波段。这一改进在1微米处最为明显，在该处，有JWST覆盖的源在νLν（2 keV）与近红外光度之间表现出比没有JWST数据的源明显更陡的关系。这种行为可以自然地由星光稀释来解释，即宿主星系发射在较低分辨率测量中占主导地位。
英文摘要
We present a component-resolved analysis of the IR--X-ray connection in a sample of 104 spectroscopically confirmed Type~1 AGN. By combining \xmm, \swift/UVOT, and new high--angular resolution \jwst/NIRCam imaging for a subset of the sources, we constructed detailed SEDs in which the IR emission was explicitly decomposed into accretion-disk, torus, and polar-dust components. This approach enables us to isolate the intrinsic AGN-IR luminosities with minimal host-galaxy contamination, providing a clean assessment of the physical relationship between the accretion flow, circumnuclear dust, and the X-ray corona. By incorporating JWST/NIRCam observations into our SED decomposition, we significantly reduce host-galaxy contamination and isolate the nuclear infrared emission with greater fidelity, particularly at near-infrared (NIR) wavelengths. This improvement is most apparent at 1 $μ\mathrm{m}$, where sources with JWST coverage exhibit a markedly steeper relation between $ν$L$_ν$ (2 keV) and the NIR luminosity than those without JWST data. This behavior is naturally explained by starlight dilution, whereby host-galaxy emission dominates lower-resolution measurements.
