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The Next Generation Virgo Cluster Survey (NGVS). XXXVI. Caught in the Act of Transformation: Morphological Decomposition and Classification of Ultracompact Dwarf Galaxies in the Virgo Cluster

  • Authors: Kaixiang Wang, Eric W. Peng, Chengze Liu, Laura Ferrarese, Patrick Côté, J. Christopher Mihos, Matthew A. Taylor, John P. Blakeslee, Jean-Charles Cuillandre, Pierre-Alain Duc, Puragra Guhathakurta, Stephen Gwyn, Youkyung Ko, Ariane Lançon, Sungsoon Lim, Lauren A. MacArthur, Thomas Puzia, Joel Roediger, Laura V. Sales, Rubén Sánchez-Janssen, Chelsea Spengler, Elisa Toloba, Hong-Xin Zhang, Mingcheng Zhu

Kaixiang Wang et al 2026 The Astrophysical Journal Supplement Series 285 .

  • Provider: AAS Journals

Caption: Figure 3.

Comparison between single King, single Sérsic, and King+Sérsic model fitting of a probable eUCD: NGVS-UCD498. The 1D surface brightness profile shows a subtle break at R > 100 pc, but the outer envelope is not as obvious as for certain eUCDs. Both single King concentration index c  >  2 and single Sérsic index n  >  6, and the two-component fit is better than the single-component fit.

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