Planetary Nebula Central Stars and Symbiotic Stars in the MACHO Galactic Bulge Database

摘要

We have examined central stars of planetary nebulae and symbiotic stars found in the MACHO Galactic bulge database to look for variability. We found four central stars of planetary nebulae and eight symbiotic stars that show variability. We examine the variability and the nature of these objects in detail, as well as reporting on the objects that we dDE not find to be variable.