Type-I Planetary Nebulae in the Large Magellanic Cloud - Oxygen Sulphur and Argon Abundances as Tracers of Chemical Enrichment

Details Type-I Planetary Nebulae in the Large Magellanic Cloud - Oxygen Sulphur and Argon Abundances as Tracers of Chemical Enrichment Type-I Planetary Nebulae in the Large Magellanic Cloud - Oxygen Sulphur and Argon Abundances as Tracers of Chemical Enrichment

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...271..429d&link_type=abstract

Astronomy and Astrophysics, Vol.271, NO. 2/APR, P. 429, 1993

Astronomy and Astrophysics

Astrophysics

18

Scientific paper

CCD spectra for a sample of 8 type I planetary nebulae in the LMC were obtained in the wavelength region λλ3800-8200 A. Electronic temperatures, densities and resulting abundances of He, N, O, S and Ar were obtained, where in particular the uncertainties in the He and O abundances are discussed. Using results from stellar nucleosynthesis we estimated from the S/O and Ar/O ratios that the relative number of type I supernovae in the LMC appear to be twice higher than in our Galaxy.

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