The systematic uncertainties introduced by atomic data in nebular abundance determinations

被引：0
|
作者：
Juan de Dios, Leticia [1 ]
Rodriguez, Monica [1 ]
机构：
[1] INAOE, Apdo Postal 51 & 216, Puebla, Mexico
来源：
PLANETARY NEBULAE: MULTI-WAVELENGTH PROBES OF STELLAR AND GALACTIC EVOLUTION | 2017年 / 12卷 / S323期
关键词：
planetary nebulae: general; ISM: abundances; atomic data; H II regions;
D O I：
10.1017/S1743921317001624
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Atomic data selection is one important source of systematic uncertainty since there are important variations between the values provided by different authors. We explore the effect of using different atomic data in the determination of physical conditions and chemical abundances in a sample of Galactic planetary nebulae and H II regions. We find that the available datasets introduce significant differences in the results, especially at densities above 10(4) cm(-3), where O/H and N/O reach uncertainties higher than a factor of 4.
引用
收藏
页码：343 / 344
页数：2
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