is denoted as “Blue Arc” in figure 4. It should be noted that if many of those EROs do not inhabit at $1.0 < z < 2.0$ this diagnostics are not very effective, because there will be overlaps of the occupation area between two classes of objects in color-color spaces. For higher redshift objects, it is suggested to use $J-K$ vs $H-K$ diagram in Pozzetti and Mannucci (2000). We could not perform this diagnostic because of a lack of $H$-band information for our sample. More detailed discussions will be given in the next section.

[lrrrrrrrrrrr]{} Name & &\
& & & $K'$ & $B$ & $V$ & $R_{\rm{c}}$ & $I_{\rm{c}}$ & $z'$ & $J$ & $R_{\rm{c}}-K'$ & $J-K'$\
A1 &04:54:12.81& $-$03:00:44.2& 19.1 & 27.2$^\dagger$& 26.3$^\dagger$& 25.1$^\dagger$& $>$24.5 & 24.4$^\dagger$& $>$22.3 & 6.0 &$>$3.2\
A2 &04:54:12.82& $-$03:00:47.6& 20.1 & $>$27.3 & $>$26.7 & $>$26.0 & $>$24.5 & $>$24.6 & $>$22.3 & $>$5.9&$>$2.2\
A3 &04:54:12.74& $-$03:00:59.2& 20.5 & 24.6$^*$ & 23.6$^*$ & $>$26.0 & $>$24.5 & 21.2$^*$ & $>$22.3 & $>$5.5&$>$1.8\
A4 &04:54:12.68& $-$03:01:01.3& 19.0$^*$& $>$27.3 & 26.3$^*$ & 25.4$^*$ & 24.4$^*$& 23.7$^*$ & 22.1$^*$& 6.4 &3.1\
A4(1$\phi$)& & & 19.8$^*$& $>$28.8 & 27.9$^*$ & 26.1$^*$ & 25.3$^*$& 24.8$^*$ & 23.0$^*$& 6.3 