Astron. Astrophys. Suppl. Ser. 135, 203-219

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

M.G. Richer¹ - G. Stasinska^2,- M.L. McCall³

Send offprint request: M.G. Richer

1 - Instituto de Astronomía, UNAM, Apartado Postal 70-264, 04510 Mexico D. F., Mexico
e-mail: richer@astroscu.unam.mx
2 - DAEC, Observatoire de Meudon, 5 place Jules Janssen, F-92195 Meudon Cedex, France
e-mail: grazyna@obspm.fr
3 - Dept. of Physics and Astronomy, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3
e-mail: mccall@aries.phys.yorku.ca

Received June 8; accepted September 22, 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 H II region in the disk of M 31. We detected [O III]$\lambda$4363 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.

Key words: galaxies: individual: M 31, M 32 galaxies abundances -- galaxies: elliptical and lenticular galaxies: evolution -- galaxies: ISM