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Fig. 4.

image

Histograms showing the size distribution of UDGs, dwarfs, and MW-like galaxies. In Re (left), UDGs overlap with the dwarfs and MW-like systems in our sample and in R1 (right), the UDGs clearly separate from the MW-like galaxies and overlap with the dwarfs. These results show that UDGs have the extensions of dwarfs.

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