New abundances of planetary nebulae in the Galactic Bulge *,**
Departamento de Astronomia, IAG/USP, C.P. 3386, 01060-970 São Paulo – SP, Brasil e-mail: escudero@astro.iag.usp.br; maciel@astro.iag.usp.br
Corresponding author: A. V. Escudero, roberto@astro.iag.usp.br
Received:
2
June
2003
Accepted:
29
September
2003
New observations and derived chemical abundances are reported for a sample of 57 bulge planetary nebulae (PN). Together with our previous results, a total of over a hundred objects have been analyzed, which constitute one of the largest samples of bulge nebulae studied under homogeneous conditions, including equipment and reduction procedures. In general, our data show a good agreement with some recent results in the literature, in the sense that the average abundances of bulge PN are similar to those from disk objects, however showing a larger dispersion.
Key words: planetary nebulae: general / galaxies: bulges / techniques: spectroscopic
© ESO, 2004