Abundances of recently discovered planetary nebulae towards the galactic bulge

@inproceedings{Escudero2001AbundancesOR,
  title={Abundances of recently discovered planetary nebulae towards the galactic bulge},
  author={Ana V Villarreal Escudero and Roberto Douglas da Costa},
  year={2001}
}
In this work we report spectrophotometric observations of a planetary nebula sample towards the galactic bulge. A total of 45 PNe was observed and their physical parameters (electron density and temperature) were derived. Ionic abundances were calculated using a three-level atom model and abundances were derived through ionisation correction factors. Results show low abundance objects at high galactic latitudes, indicating a possible vertical gradient inside the bulge. A few objects with low N… CONTINUE READING

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A study of planetary nebulae in and towards the Galactic Bulge

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