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The metal abundances of symbiotic stars
Zhu, ZX ; Zhao, G ; Wang, FL
2004
Source PublicationStellar Astrophysics with the World's Largest Telescopes
ISSN0094-243X
Volume752Pages:123-125
AbstractHigh resolution, high signal to noise, echelle spectra of some symbiotic stars were obtained in five runs from 1999 to 2004. The metal abundance of HD154791, which contains a neutron-star companion, is similar to other normal giants with same spectral type. The stellar surface parameters of the cool component of AG Dra have been calculated utilizing the Kurucz atmosphere model and assuming the local thermodynamic equilibrium. We have obtained the effective temperature of 3960 50 K, the surface gravity of log(g) = 0.85 +/- 0.30, and the metal abundance of [Fe/H]= -1.5. Combining the results with other authors' observations, we conclude that the cool component of AG Dra may be evolved to early AGB.
KeywordSystem Ag Draconis
Subject AreaPhysics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7714
Collection南极天文中心
Recommended Citation
GB/T 7714
Zhu, ZX,Zhao, G,Wang, FL. The metal abundances of symbiotic stars[J]. Stellar Astrophysics with the World's Largest Telescopes,2004,752:123-125.
APA Zhu, ZX,Zhao, G,&Wang, FL.(2004).The metal abundances of symbiotic stars.Stellar Astrophysics with the World's Largest Telescopes,752,123-125.
MLA Zhu, ZX,et al."The metal abundances of symbiotic stars".Stellar Astrophysics with the World's Largest Telescopes 752(2004):123-125.
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