Planetary nebulae provide a direct way to probe elemental abundances, their distributions and their gradients in populations in nearby galaxies. We investigate bulge planetary nebulae in M 31 and M 32 using the strong emission lines, Hα, He I, [O III], [N II], [S II] and [Ne III]. From the [O III] 4363/5007 line ratio and the [O II] 3727/3729, we determine the electron temperatures and number densities. With a standard modeling procedure (Hyung, 1994), we fit the line intensities and diagnostic temperatures, and as a result, we derive the chemical abundances of individual planetary nebulae in M 31 and M 32. The derived chemical abundances are compared with those of the well-known Galactic planetary nebulae or the Sun. The chemical abundances of M 32 appear to be less enhanced compared to the Galaxy or M 31.

• SIEK HYUNG(Korea Astronomy Observatory)
• LAWRENCE H. ALLER(Dept. of Physics and Astronomy, UCLA)
• SOO-RYEON HAN(Dept. of Earth Science Education, Korea National University of Education)
• YOUNG-KWANG KIM(Korea Astronomy Observatory)
• WONYONG HAN(Korea Astronomy Observatory)
• YOUNGJUN CHOI(Korea Astronomy Observatory)