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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 5.

Light-weighted age distribution (with 7800−8800 Å flux level contour) derived from the PPXF fit suggests that the central starburst region is surrounded by a relatively old stellar population with an age of ≳ a few Gyrs. The fitting is based on KCWI BL data covering rest frame 3650−5400 Å. Objects 3 and 1 have similarly old stellar populations, while object 2 assembled most of its mass in a recent starburst.

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