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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 2.

Comparison between single King, single Sérsic, and King+Sérsic model fitting of a certain eUCD: NGVS-UCD509. Upper left: NGVS ﹩{u}^{* }g^{\prime} i^{\prime} ﹩ color composite image. Bottom left: The ﹩{g}^{{\prime} }﹩-band image of NGVS-UCD509. Contours show the surface brightness at μg = 24–27 mag arcsec−2. The right columns are single King, single Sérsic, and King+Sérsic model fitting results, respectively. The 1D surface brightness profile and fitting results are shown in the top panel, and the residual is in the bottom panel. NGVS-UCD509 is well fit with an inner King model and an outer Sérsic model.

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