Planetary nebulae in M 32 and the bulge of M 31: Line intensities and oxygen abundances

¹ Instituto de Astronomía, UNAM, Apartado Postal 70-264, 04510 Mexico D. F., Mexico
² DAEC, Observatoire de Meudon, 5 place Jules Janssen, F-92195 Meudon Cedex, France
³ Dept. of Physics and Astronomy, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3

Send offprint request to: M.G. Richer

Received: 8 June 1998
Accepted: 22 September 1998

Abstract

We present spectroscopy of planetary nebulae in M 32 and in the bulge of M 31 that we obtained with the MOS spectrograph at the Canada-France-Hawaii Telescope. Our sample includes 30 planetary nebulae in M 31 and 9 planetary nebulae in M 32. We also observed one HII region in the disk of M 31. We detected [OIII]λ4363 in 18 of the planetary nebulae, 4 in M 32 and 14 in the bulge of M 31. We use our line intensities to derive electron temperatures and oxygen abundances for the planetary nebulae.