This article presents a theoretical framework for the evolution of light element nuclides in the Galactic disc. The authors use two key assumptions: infall of metal-poor gas to the disc at an increasing rate, and destruction of fragile nuclides in hot relatively dense supergiant envelopes. Light nuclides are accelerated by supernova shocks, and

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We present in this contribution our set of multiwavelength synthesis models including the evolution of single and binary stars. The main results we have obtained can be summarized as follows: (a) massive close-binary systems will start to experience mass transfer episodes after the first 4 Myr of the starburst evolution; (b) as a result of these

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En esta memoria se aplican técnicas astrosismológicas a ocho estrellas delta Scuti, en diferentes estados evolutivos y pertenecientes al cúmulo del Pesebre para obtener sus modos propios de oscilación y, a partir de ellos, obtener información tanto sobre la estructura de las estrellas particulare, como sobre las características generales del cúmulo