Many potential curves of cesium dimer molecule are heavily influenced by large spin-orbit splitting in the 6p atomic level. Among other effects it causes an interesting splitting structure in the first and the second excited 1 3?g and 2 3?g states. As a results of this we have instead of a single pair of  3?g interacting potential curves (or avoided crossing) a more complex structure with 2g, 1g, 0g+ and 0g- pairs. The intensity borrowing and specific avoided crossing make the radiative transitions to the repulsive lower 1u and 0u- states (they degenerate into a single 3?u+ lowest triplet potential curve).
In this contribution we shall discuss the origin of intensity structure of three diffuse bands and many satellite bands around 852.1 nm Cs resonance line. Calculated potential curves for Cs2 molecule are used to obtain relevant difference potential curves in order to describe the origin of diffuse bands and triplet satellite bands. We shall present results from high resolution absorption measurements in cesium cell and emission measurements using pilsed high pressure cesium lamp. Comparison between theoretical predictions and experimental results will be discussed.