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UGC 2369S: A Kiloparsec-scale Triple Merger Candidate Identified in a Nearby Luminous Infrared Galaxy

  • Authors: Yuanze Ding, Michael J. Koss, Fiona A. Harrison, Charles C. Steidel, Connor Auge, Jared Gillette, Erica Hammerstein, Ruancun Li, Macon Magno, Ignacio del Moral-Castro, Alessandro Peca, Claudio Ricci, Yiqing Song, Ezequiel Treister, Zhuyun Zhuang

Yuanze Ding et al 2026 The Astrophysical Journal 1002 .

  • Provider: AAS Journals

Caption: Figure 8.

Left: spaxel-wise BPT classification using the [O III]/Hβ–[N II]/Hα BPT diagram (J. A. Baldwin et al. 1981; L. J. Kewley et al. 2006). Right: [N II]/Hα line-ratio map. The primary driving factor of the composite classification is [N II]/Hα ratio, which increases rapidly toward object 3.

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