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The Silk Nebula: A Newly Discovered Giant [O III] Emission Filament

  • Authors: Yi-Fei Wu, Song-Yu Jia, Chao-Jian Wu, Chao Zhang, Li-Yue Zhang, Shu Wang, Juan-Juan Ren, Quzhen Dongyang, Hong-Yun Qiu, Zhi-Hong He, Jichen Zhang, Guo-You Sun, Wei-Guo Zhang, Jian-Jun Chen, Hong-Liang Yan, Xiang-Song Fang, Hong Wu

Yi-Fei Wu et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 1.

Deep color composite images of the Silk Nebula, combining Hα (red) and [O III] (blue) emission. (a) The full nebula image obtained by the SWONS team, with a field of view of 1∘× 10∘. (b) Enlarged view of the region near the LAMOST MRS-N field of view, which is indicated by the white circle. We divide this area into four regions for spectral analysis: P1–P3 are zones of relatively bright [O III] emission, while P4 is a nebula-free region used as a background reference.

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