Helium and Oxygen Abundances in SMC Planetary Nebulae
R. D. D. Costa,J. A. de Freitas Pacheco,T. P. Idiart-2000-01-01-Symposium - International Astronomical Union
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TL;DRAbstract
In this work we report new high quality spectroscopic data for a sample of PNe in the SMC, aiming to derive physical parameters and chemical abundances, in particular to settle the question concerning the oxygen discrepancy found for type I planetaries with respect to stars and HII regions.
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In this work we report new high quality spectroscopic data for a sample of PNe in the SMC, aiming to derive physical parameters and chemical abundances, in particular to settle the question concerning the oxygen discrepancy found for type I planetaries with respect to stars and HII regions.
Keywords
Planetary nebulaHeliumStarsOxygenAstrophysicsAbundance (ecology)PhysicsWork (physics)
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