Example of galaxies SEDs. Left panel shows the SEDs with redshift of 0.5 with infrared luminosity of 10¹¹L_⊙, while the right panel is for the SEDs with redshift of 1.0 and an infrared luminosity of 2 × 10¹²L_⊙. Red, green, and blue solid lines represent SEDs of Mrk231, M82, and Arp220. Thick horizontal lines in pink and sky blue show the 5σ detection limits of AKARI N2 – L24 filters and ground-based g′ – K_s band 4σ limiting magnitudes that we observed (see Table 2). Filter response curves of CFHT/MegaCam, WIRCam, and AKARI/IRC are shown at the bottom of the panels. Red, green, blue, pink, cyan, orange, and black dotted lines represent g′, r′, i′, z′, Y, J, and K_s, while red, green, blue, pink, cyan, yellow, black, orange, and gray solid lines are AKARI/IRC N2 – L24 bands.