For Ce(Fe$_{0.4}$Co$_{0.6}$)$_{2}$ and CeFe$_{2}$ compounds, we obtained Fe/Co $3d$ and Ce $4f$ spectra by using photoelectron spectroscopy. With the Anderson impurity Hamiltonian, we analyzed theoretically the Ce $4f$ spectra of two compounds. Not only a bulk contribution but also a surface contribution to the Ce $4f$ spectrum is needed to explain the experimental Ce $4f$ spectrum, For the Ce(Fe$_{0.4}$Co$_{0.6}$)$_{2}$ compound, we obtained a theoretical bulk $4f$ spectrum by using a bare $f$ electron binding energy, $\epsilon_{f}^ B $, to be 0.90 eV and the average hybridization between a $f$ and conduction electrons, $\Delta_{av}^B$, to be 47.6 meV. From the theoretical results of the Ce(Fe$_{0.4}$Co$_{0.6}$)$_{2}$ compound, the number of $4f$ electrons, $n_{f}^B$, is 0.88 and the Kondo temperature, $T_{K}$, is 261K. For the CeCo$_{2}$ compound, we obtained a theoretical bulk $4f$ spectrum, $n_{f}^B$=0.80 and $T_{K}$=691K with $\epsilon_{f}^ B $=0.90 eV and $\Delta_{av}^B$=61.5 meV.

Keywords: Resonant Photoemission Spectroscopy, Electronic Structure