Abstract
We have obtained new spectroscopic observations of planetary nebulae in the elliptical galaxy M32 and in the dwarf spheroidal galaxies NGC 185 and NGC 205 using the Multi-Object Spectrograph at the Canada-France-Hawaii Telescope. Our new data includes 14 planetary nebulae in M32, 13 in NGC 205, and all 5 cataloged in NGC 185. Almost all of these planetary nebulae are bright, within the first 2 mag of the planetary nebula luminosity function. We find that the planetary nebulae in M32, NGC 185, and NGC 205 have properties intermediate between those found for the planetary nebulae in M31 and the Large Magellanic Cloud (LMC). These new data support the suggestion that the chemical evolution of elliptical and dwarf spheroidal galaxies is regulated by supernova-driven galactic winds (Richer et al. 1998).
