The nuclear starburst activity in the Seyfert 2 galaxy NGC 7679

We present our recent spectrophotometric results of the infrared luminous Seyfert 2 galaxy NGC 7679. We find compelling evidence for the presence of a recent nuclear starburst, revealed by the observations of a) the spectral features of high order Balmer absorption lines, b) the weak equivalent widths for CaIIK lambda 3933, CN lambda 4200, G-band lambda 4300 and MgIb lambda 5173, and c) the suggested UV stellar wind resonance lines (N V lambda 1240, Si IV lambda 1400 and C IV lambda 1550) in the IUE spectrum. Using the simple stellar population synthesis model, we find that in the nuclear 2'' x 2'' region, the contributions from the old, intermediate and young components are 21.7%, 42.9% and 35.4%, respectively. These nuclear starburst activities might have been triggered by the close encounter with NGC 7682, as suggested by recent numerical simulations.