Abundances of the halo PN BoBn 1

We have performed a comprehensive chemical abundance analysis of the extremely metal-poor ([Ar/H]<-2) halo planetary nebula (PN) BoBn 1 based on International Ultraviolet...我们基于国际紫外线（International Ultraviolet），对极端贫金属（[Ar/H]<-2）的银晕行星状星云（planetary nebula，PN）BoBn 1开展了全面的化学丰度分析。