The optical absorption spectrum of Sr+Xe, is measured in the 21 500-23 300 cm(-1) energy region, using photofragmentation spectroscopy of mass-selected ions. The spectrum consists of two vibrational progressions that are due to dipole transitions from the X(2)Sigma (1/2) electronic ground state to vibrational levels of the excited A(2)Pi (1/2) and A(2)Pi (3/2) states. From isotope-resolved measurements and using the approximation of the anharmonic oscillator, we calculated the vibrational constants for the ground X(2)Sigma (1/2) and the excited A(2)Pi (1/2), A(2)Pi (3/2) states. Finally, we estimate the binding energies of the involved states with the aim of an electrostatic potential model.