This research activity was initiated in 2015 June by the grant provided by KASI (the Korea Astronomy and Space Science Institute) with the purpose of fostering the collaboration between Korean and Chilean astronomers. Late stage evolution of stars less massive than 8 solar mass is characterized by severe mass loss, which leads to chemical evolution of the interstellar space and provides raw materials for the formation of stars of the next generation. Having suffered heavy mass loss recently, young planetary nebulae are important and interesting objects to study the mass loss processes. Type Ia supernovae played an essential role in establishment of the accelerated expansion of the universe. However, the progenitor of these spectacular objects is only poorly known. Symbiotic stars are wide binary systems consisting of a hot white dwarf and a mass losing giant. These systems are believed to generate a large amount of energy by capturing a fraction of the slow stellar wind from the giant component. In this picture the white dwarf is surrounded by an accretion disk, which may be investigated spectroscopic and photometric tools. In this collaborative effort we will investigate the mass loss processes and mass transfer processes that are pivotal in understanding the late stage of stellar evolution. 

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