Abstract
To study the final stages of the evolution of stars in the range of 1–8M ⊙ we have started a project on AGB stars in the Small Magellanic Cloud (SMC). Based on the IRAS Faint Source Catalog we have selected 29 objects with IRAS 12 and 25 micron colours indicative of red AGB stars. Ground-based near-infrared (NIR) JHK images were obtained of these fields. With ISO1 (CAM and PHT) a follow-up study is being made to get the spectral energy distribution (SED) between 3.6 and 60 microns of the AGB stars detected by IRAS. We are analysing the SEDs using a radiative transfer model which provides accurate determinations of the luminosities and mass loss rates of the objects. Combining the data on the SMC, LMC and existing data on the Galaxy will answer the open question of the metallicity dependence of mass loss in late-type stars. This in turn is important in the ejection of matter by AGB stars to the interstellar medium over the age of the Galaxy.
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