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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 8.

Examples of Gemini North/GMOS spectra for four bona fide eUCDs. The Gemini/GMOS flux-normalized optical spectrum (black), the pPXF best-fitting template (red), and fitting residuals (gray) are plotted in the left panels. The right panels show the 15″ × 15″ ﹩{g}^{{\prime} }﹩-band NGVS imaging with contours for each object, both of which show extended envelopes. Strong Hα absorption is the primary diagnostic for bona fide eUCDs.

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