characteristics (more disk-shaped / elongated ellipse) of UDGs. The model found that UDGs can be categorized into two color types: There are blue UDGs with a color index (g-i) less than 0.6, and there are red UDGs with a color index (g-i) greater than 0.6. The model also found that, when it comes to a UDGs effective surface brightness, blue UDGs tend to have a higher surface brightness than that of red UDGs. The average surface brightness of this study was found to be 25 mag arcsec^-2.

Based