TYPE-I PLANETARY-NEBULAE IN THE LARGE MAGELLANIC CLOUD - OXYGEN, SULFUR, AND ARGON ABUNDANCES AS TRACERS OF CHEMICAL ENRICHMENT

被引：0
作者：
PACHECO, JAD
BARBUY, B
COSTA, RDD
IDIART, TEP
机构：
来源：
ASTRONOMY & ASTROPHYSICS | 1993年 / 271卷 / 02期
关键词：
PLANETARY NEBULAE; GENERAL; MAGELLANIC CLOUDS; GALAXIES; ABUNDANCES;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
CCD spectra for a sample of 8 type I planetary nebulae in the LMC were obtained in the wavelength region lambdalambda 3800-8200 angstrom. 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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页码：429 / 434
页数：6
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