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Photoionization of the Composite Nebula Surrounding NGC 5408 X-1: Implications for Beamed Emission

  • Authors: Jing Guo, 静 郭, Hua Feng, Roberto Soria, Fuyan Bian, Jianfeng Wu, Lian Tao, Jesús M. Corral-Santana

Jing Guo et al 2026 The Astrophysical Journal 1010 .

  • Provider: AAS Journals

Caption: Figure 2.

Continuum-subtracted HST narrowband images around NGC 5408 X-1, with WFC3 F502N (left) for [O III] λ5007 and WFPC2 F656N (right) for Hα and [N II]. The images are smoothed with a Gaussian kernel of σ = 1 pixel. The ULX position is enclosed by the circle.

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