We present new plasma diagnostics and abundances of a sample of planetary nebulae located in the Galactic bulge (168 objects), the Galactic inner disk (61 objects) and in the...

B2FIND00

Planetary nebulae abundances

Long slit spectrophotometry of 13 bipolar planetary nebulae has been used to study their physical and chemical properties. In each nebula, one to seven different spatial regions...

B2FIND00

Chemical abundances of planetary nebulae

In this paper, we report new observations and derive chemical abundances for a sample of 26 planetary nebulae (PN) located in the anti-center direction. Most of these nebulae...

B2FIND30

Abundances in planetary nebulae