New abundances of planetary nebulae in the Galactic Bulge

Free access article

Issue		A&A Volume 414, Number 1, January IV 2004


Page(s)		211 - 221
Section		Formation, structure and evolution of stars
DOI		http://dx.doi.org/10.1051/0004-6361:20031625

A&A 414, 211-221 (2004)
DOI: 10.1051/0004-6361:20031625

New abundances of planetary nebulae in the Galactic Bulge

A. V. Escudero, R. D. D. Costa and W. J. Maciel

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
(Received 2 June 2003 / Accepted 29 September 2003)

Abstract
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

Offprint request: A. V. Escudero, roberto@astro.iag.usp.br

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