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    • The Galaxy Activity, Torus, and Outflow Survey (GATOS). VII. the 20-214 Μm Imaging Atlas of Active Galactic Nuclei Using SOFIA

    ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES（2025）

    Univ Texas San Antonio | Univ South Carolina | Univ Oxford | Inst Astrofis Canarias | Space Telescope Sci Inst | Natl Inst Nat Sci NINS | Univ Coll Southampton | Astron Observ | Univ Diego Portales | Univ Alaska Anchorage | Univ Complutense Madrid | Sorbonne Univ | Max Planck Inst Extraterr Phys | ICATALIST | Univ Nacl Autonoma Mexico | Inst Fis Fundamental | Newcastle Univ | Univ Durham

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    Abstract
    We present a 19.7-214 mu m imaging atlas of local (4-181 Mpc; median 43 Mpc) active galactic nuclei (AGN) observed with FORCAST and HAWC+ on board the SOFIA telescope with angular resolutions similar to 3 ''-20 ''. This atlas comprises 22 Seyferts (17 Type 2 and five Type 1) with a total of 69 images, 41 of which have not been previously published. The AGN span a range of luminosities of log10(L-bol[erg s(-1)])=[42,46] with a median of log10(L-bol[erg s(-1)])=44.1 +/- 1.0. We provide the total fluxes of our sample using aperture photometry for point-source objects and a 2D Gaussian fitting for objects with extended host galaxy emission, which was used to estimate the unresolved nuclear component. Most galaxies in our sample are pointlike sources; however, four sources (Centaurus A, Circinus, NGC 1068, and NGC 4388) show extended emission in all wavelengths. The 30-40 mu m extended emission in NGC 4388 is coincident with the narrow-line region at PA similar to 50 degrees, while the dusty extension at longer wavelengths arises from the host galaxy at PA similar to 90 degrees. Our new observations allow us to construct the best-sampled parsec-scales (spectral energy distributions, SEDs) available between 30 and 500 mu m for a sample of nearby AGN. We estimate that the average peak wavelength of the nuclear SEDs is similar to 40 mu m in nu F-nu, which we associate with an unresolved extended dusty region heated by the AGN.
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    Active galaxies,Active galactic nuclei,Supermassive black holes
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    【要点】：本文介绍了利用SOFIA望远镜的FORCAST和HAWC+仪器观测得到的20-214微米波段的局部活动星系核(AGN)成像图集，揭示了AGN在不同波长下的辐射特性，为研究AGN的核光谱能量分布提供了新的数据。
    

    【方法】：研究使用了SOFIA望远镜的FORCAST和HAWC+仪器，在19.7-214微米波段对22个塞弗特星系（包括17个Type 2和5个Type 1）进行观测，采用角分辨率约为3''-20''的成像技术，并结合了点源的光度测量和二维高斯拟合方法来估计未解析的核成分。
    

    【实验】：研究构建了一个包含69张图像的图集，其中41张是首次发布。通过对样本 galaxy 进行观测，得到了它们在不同波长的总流量，并发现大部分galaxy表现为点源，但有四个源（Centaurus A、Circinus、NGC 1068和NGC 4388）在所有波长下都显示出扩展发射。特别是在NGC 4388中，30-40微米的扩展发射与窄线区域重合，而较长波长的尘埃扩展则来自宿主星系。这些新的观测数据使得研究者能够构建出在30到500微米波段内对邻近AGN样本最充分采样的谱能量分布。
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