Correlations between Log(L_0.30), Log(L_0.45) and Log() with Log(1 + z) (left) and Log(P_1.4) (right) for CSOs/MSOs. The curved lines in the left-hand plots represent the fits to the data obtained using Eq. (2) (page ). The curves in the right-hand plots show how the relations with (1 + z) reflect on P_1.4 because of the P_1.4–(1 + z) dependence (Fig. 9), for a flux density limit S_1.4 = 1.5 Jy. The almost horizontal dashed lines in the two bottom panels represent the expected value of Log() for an old elliptical galaxy.