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Spectral analysis of two solar twins and the colors of the Sun
Zhao ZhengShi1,2; Chen YuQin1; Zhao JingKun1; Zhao Gang1
2010-03-01
发表期刊SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
卷号53期号:3页码:579-585
摘要High resolution (R similar to 40,000) and high signal-to-noise ratio (>150) spectra of two solar twins, HD146233 and HD195034, are obtained with the Coude Echelle Spectrograph at the 2.16 m telescope of the National Astronomical Observatories of Chinese Academy of Sciences (Xinglong, China). Based on the detailed spectrum match, comparisons of chemical composition and chromospheric activity, HD146233 and HD195034 are confirmed that they are similar to the Sun except for lithium abundance, which is higher than the solar value. Moreover, among nine solar twin candidates (including HD146233 and HD195034) found in the previous works, we have picked out six good solar twin candidates based on newly-derived homogenous parameters, and collected their colors in the Johnson/Cousins, Tycho, 2MASS and StrOmgren system from the literature. The average color are (B-V)(circle dot)=0.644 mag, (V-I(c))(circle dot)=0.707 mag, (B(T)-V(T))(circle dot)=0.725 mag, (J-H)(circle dot)=0.288 mag, (H-K)(circle dot)=0.066 mag, (v-y)(circle dot)=1.028 mag, (v-b)(circle dot)=0.619 mag, (u-v)(circle dot)=0.954 mag and (b-y)(circle dot)=0.409 mag, which represent the solar colors with higher precision than previous works.
关键词Sun-colors Star-atmospheres Abundances Fundamental Parameters
DOI10.1007/s11433-009-0228-5
收录类别SCI
语种英语
WOS记录号WOS:000276661700035
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7791
专题光学天文研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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GB/T 7714
Zhao ZhengShi,Chen YuQin,Zhao JingKun,et al. Spectral analysis of two solar twins and the colors of the Sun[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2010,53(3):579-585.
APA Zhao ZhengShi,Chen YuQin,Zhao JingKun,&Zhao Gang.(2010).Spectral analysis of two solar twins and the colors of the Sun.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,53(3),579-585.
MLA Zhao ZhengShi,et al."Spectral analysis of two solar twins and the colors of the Sun".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 53.3(2010):579-585.
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