Astron. Astrophys. Suppl. Ser.
Volume 135, Number 2, March I 1999
|Page(s)||203 - 219|
|Published online||15 March 1999|
Planetary nebulae in M 32 and the bulge of M 31: Line intensities and oxygen abundances
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
Accepted: 22 September 1998
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.
Key words: galaxies: individual: M 31, M 32 galaxies abundances / galaxies: elliptical and lenticular galaxies: evolution / galaxies: ISM
© European Southern Observatory (ESO), 1999