Left panel: Star formation distribution shown by Hα (red contour), UV (blue contour for FUV and lime contour for NUV) overplotted in gray-scale NGVS g band image. The contour values are 3 times and 10 times the noise level. The yellow cross marks the galaxy center. Middle panel: Radial profile of Hα surface density from the narrow band Hα images. We also present the i-band surface brightness profile as a reference. Right panel: Color profile of VCC 479 by calculating the difference between g band and i band surface brightness profile (Figure 5 in Sect. 3.3). The blue-shaded areas represent the 2σ range of the g − i colors of normal dEs at the same magnitudes as VCC 479, derived from the color–magnitude relation of the Virgo cluster core region by NGVS observations (Roediger et al. 2017).