The light-weighted age and metallicity of Galactic globular clusters

doi:10.1007/s10509-010-0309-y

YNAO OpenIR > 大样本恒星演化研究组

	The light-weighted age and metallicity of Galactic globular clusters
	Zhang Y(张余)1,2,3 ; Zhang FH(张奉辉)1,3 ; Han ZW(韩占文)1,3 ; Liu JZ(刘进忠)1,2,3 ; Zhang, Y (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊	ASTROPHYSICS AND SPACE SCIENCE
	2010-10
卷号	329 期号:1-2 页码:255-260
DOI	10.1007/s10509-010-0309-y
产权排序	第1完成单位
收录类别	SCI
关键词	Stars: Abundances Globular Clusters: General Galaxies: Fundamental Parameters
摘要	Spectra synthesis is entering a new era with the availability of large and high-quality spectroscopic data and full spectrum fitting methods. Establishing the reliability whether the STARLIGHT code (a full spectrum fitting code, Cid Fernandes et al. (Mon. Not. R. Astron. Soc. 358:363, 2005)) is suitable to study the properties of various types of galaxies is vital to galaxy study. In testing this possibility, Galactic globular clusters (GCs) provide an excellent medium. Taking the 40 Galactic GCs as an example in our work, we analyze their integrated spectra from Schiavon et al. (Astrophys. J. Suppl. 160:163, 2005) and obtain their mixtures of stellar populations that best represents their composite nature. Through analyzing the distributions of stellar ages and metallicities respectively, we find that the stellar metallicity distribution is centered at a low value and the stellar age distribution is very scattered. To compare with the literature, we also calculate the light-weighted ages and metallicities of GCs, and we find that the light-weighted metallicities agree with the literature, while the light-weighted ages are lower than those of the literature. This demonstrates that STARLIGHT can be used to obtain the metallicities of GCs.
项目资助者	Chinese National Science Foundation [10773026, 10821061, 2007CB815406] ; Chinese Academy of Sciences [KJCX2-YW-T24]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-640X
URL	查看原文
归档日期	2010-10-12
WOS记录号	WOS:000282823200041
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	EVOLUTIONARY POPULATION SYNTHESIS ; HIGH-SPECTRAL-RESOLUTION ; OLD STELLAR POPULATIONS ; SKY SURVEY GALAXIES ; INTEGRATED SPECTRA ; STAR-FORMATION ; SEMIEMPIRICAL ANALYSIS ; INDEXES ; ABUNDANCE ; LIBRARY
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/4490
专题	大样本恒星演化研究组中国科学院天体结构与演化重点实验室
通讯作者	Zhang, Y (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, 650011, P.R. China 2.Graduate University of Chinese Academy of Sciences, Beijing, 100049, P.R. China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, P.R. China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Zhang Y,Zhang FH,Han ZW,et al. The light-weighted age and metallicity of Galactic globular clusters[J]. ASTROPHYSICS AND SPACE SCIENCE,2010,329(1-2):255-260.
APA	Zhang Y,Zhang FH,Han ZW,Liu JZ,&Zhang, Y .(2010).The light-weighted age and metallicity of Galactic globular clusters.ASTROPHYSICS AND SPACE SCIENCE,329(1-2),255-260.
MLA	Zhang Y,et al."The light-weighted age and metallicity of Galactic globular clusters".ASTROPHYSICS AND SPACE SCIENCE 329.1-2(2010):255-260.

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