Blue straggler stars in galactic open clusters and the simple stellar population model

doi:10.1086/512964

YNAO OpenIR > 大样本恒星演化研究组

	Blue straggler stars in galactic open clusters and the simple stellar population model
	Xin Y(新宇)1,2 ; Deng, L 2; Han ZW(韩占文)1 ; Xin, Y (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Yunnan, Peoples R China.
发表期刊	ASTROPHYSICAL JOURNAL
	2007-05-01
卷号	660 期号:1 页码:319-329
DOI	10.1086/512964
产权排序	第1完成单位
收录类别	SCI
关键词	Blue Stragglers Galaxy: Stellar Content Open Clusters And Associations: General
摘要	The presence of blue straggler stars (BSs) as secure members of Galactic open clusters (OCs) poses a major challenge to the conventional picture of simple stellar population (SSP) models. These are based on the stellar evolution theory of single stars, whereas the major formation mechanisms of BSs are all correlated with stellar interactions. We have illustrated this in a previous study based on a small sample of old (age >= 1 Gyr) Galactic OCs. However, for the purpose of demonstrating the contributions of BSs to the conventional SSP models statistically and systematically, a large database with sufficient coverage of age and metallicity is definitely needed. The working sample now includes 100 Galactic OCs with ages ranging from 0.1 to 10 Gyr. The contributions of BSs to the integrated light of their host clusters are calculated on an individual cluster basis. The general existence of BSs in our star cluster sample dramatically alters the predictions of conventional SSP models in terms of their integrated properties. Neglecting the consequences of nonstandard evolutionary products, such as BSs, in stellar populations, very large uncertainties can be made in analyzing their integrated spectral energy distributions at unresolvable conditions. The current work strongly suggests that when evolutionary population synthesis technique is used to study the properties of unresolved stellar populations in galaxies, the contributions of BSs should be taken into account.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-637X
URL	查看原文
归档日期	2007-12-02
WOS记录号	WOS:000246108700024
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	OLD OPEN CLUSTERS ; COLOR-MAGNITUDE DIAGRAMS ; TRANSITING EXTRASOLAR PLANETS ; UBVI CCD PHOTOMETRY ; BROAD-BAND COLORS ; WIYN OPEN CLUSTER ; RED GIANTS ; GLOBULAR-CLUSTERS ; FUNDAMENTAL PARAMETERS ; CHEMICAL-COMPOSITION
引用统计	被引频次：28[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/114a53/4440
专题	大样本恒星演化研究组
通讯作者	Xin, Y (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Yunnan, Peoples R China.
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China 2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, 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	Xin Y,Deng, L,Han ZW,et al. Blue straggler stars in galactic open clusters and the simple stellar population model[J]. ASTROPHYSICAL JOURNAL,2007,660(1):319-329.
APA	Xin Y,Deng, L,Han ZW,&Xin, Y .(2007).Blue straggler stars in galactic open clusters and the simple stellar population model.ASTROPHYSICAL JOURNAL,660(1),319-329.
MLA	Xin Y,et al."Blue straggler stars in galactic open clusters and the simple stellar population model".ASTROPHYSICAL JOURNAL 660.1(2007):319-329.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Blue Straggler Stars（371KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览请求全文