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20032009
most citedChemical evolution of the galactic bulge: single and double infall models

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astro-ph2005

Planetary nebulae and the chemical evolution of the galactic bulge

Roberto D. D. Costa, Andre V. Escudero, Walter J. Maciel

Electron temperatures, densities, ionic and elemental abundances of helium, nitrogen, oxygen, argon, sulfur and neon were derived for a sample of bulge planetary nebulae, represent…