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Helium and Oxygen Abundances in SMC Planetary Nebulae

Published online by Cambridge University Press:  25 May 2016

R. D. D. Costa ,
J. A. de Freitas Pacheco  and
T. P. Idiart
R. D. D. Costa
Affiliation:
Instituto Astronomico e Geofísico/USP, Av. Miguel Stéfano 4200, 04301-904 - São Paulo - SP, Brazil
J. A. de Freitas Pacheco
Affiliation:
Instituto Astronomico e Geofísico/USP, Av. Miguel Stéfano 4200, 04301-904 - São Paulo - SP, Brazil
T. P. Idiart
Affiliation:
Instituto Astronomico e Geofísico/USP, Av. Miguel Stéfano 4200, 04301-904 - São Paulo - SP, Brazil

Abstract

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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.

Type
3. Abundances of D, 3He and 4He
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 234 - 235
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

Costa, R.D.D., de Freitas Pacheco, J.A. & Idiart, T.P. 2000, A&A, submitted Google Scholar
de Freitas Pacheco, J.A., Costa, R.D.D. Barbuy, B. & Idiart, T.P. 1993, A&A 271, 429 Google Scholar
Peimbert, M. in IAU Symposium 103, Planetary Nebulae, ed. Flower, R.D. (Dordrecht: Reidel), 233 Google Scholar