Speaker: Jordi Jose

Dept. Fisica i Enginyeria Nuclear (Vilanova i la Geltru, SPAIN) 
                    &
Institut d'Estudis Espacials de Catalunya (IEEC)  (Barcelona, SPAIN)

"Classical nova explosions: sources of gamma rays
 and presolar grains"

One of the observational evidences in support of the
thermonuclear runaway model for classical nova outbursts
relies on the accompanying nucleosynthesis. In this talk,
I review our current understanding in nova nucleosynthesis,
with special emphasis on the interplay between nova 
outbursts and the Galactic chemical abundances (through
 13C, 15N and 17O), the synthesis of radioactive nuclei,
 of interest for gamma-ray astronomy, such as 7Li, 22Na
 or 26Al, the endpoint of nova nucleosynthesis, based on
both theoretical and observational grounds, and the recent
discovery of presolar meteoritic grains, both in the 
Murchison and Acfer meteorites, likely condensed in the 
shells ejected during nova outbursts.