Energy molecular constants (vibrational, rotational, centrifugal) and radiation parameters (the Einstein coefficients, oscillator strengths and Franck-Condon factors), the wave numbers of rotational lines of electronic-vibrational-rotational transition В¹П_u-X¹Σ⁺_g and radiation lifetimes for the vibrational-rotational energy levels of excited state of the cesium and rubidium dimers are calculated. Calculations are carried out on the basis of semiempirical potential curves constructed in this work.