2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/344We present and discuss near-ultraviolet and optical ground-based spectra of the 20 brightest Seyfert 2 nuclei, and HST ultraviolet images and ultraviolet spectroscopy for a few of them. The goal is to study the starburst-AGN connection and the origin of the featureless continuum. The results indicate that half of the nuclei in the sample harbor a young and/or intermediate age population. These stars are formed in powerful and dusty starbursts of short duration, that have bolometric luminosities similar to the estimated bolometric luminosities of their obscured Seyfert 1 nuclei.Proceedings of the JENAM Conference (Toulouse, September 1999). To be published in EDPS Conference Series in Astronomy & Astrophysics, Editor B. Rocca-Volmerange and H. Sol. 8 pages, 7 figuresAstrophysicstext