BINARY INTERACTIONS AS A POSSIBLE SCENARIO FOR THE FORMATION OF MULTIPLE STELLAR POPULATIONS IN GLOBULAR CLUSTERS

	BINARY INTERACTIONS AS A POSSIBLE SCENARIO FOR THE FORMATION OF MULTIPLE STELLAR POPULATIONS IN GLOBULAR CLUSTERS
	Jiang DK(姜登凯)1,2 ; Han ZW(韩占文)1,2 ; Li LF(李立芳)1,2
刊名	ASTROPHYSICAL JOURNAL
	2014-07-01
卷号	789 期号:1
关键词	binaries: general globular clusters: general stars: evolution stars: rotation
ISSN号	0004-637X
通讯作者	Jiang, DK (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	Observations have revealed the presence of multiple stellar populations in globular clusters (GCs) that exhibit wide abundance variations and multiple sequences in the Hertzsprung-Russell (HR) diagram. We present a scenario for the formation of multiple stellar populations in GCs. In this scenario, initial GCs are single-generation clusters, and our model predicts that the stars with anomalous abundances observed in GCs are merged stars and accretor stars produced by binary interactions-rapidly rotating stars at the moment of their formation-and that these stars are more massive than normal single stars in the same evolutionary stage. We find that, due to their own evolution, these rapidly rotating stars have surface abundances, effective temperatures, and luminosities that are different from normal single stars in the same evolutionary stage. This stellar population of binaries reproduces two important points of observational evidence of multiple stellar populations: a Na-O anticorrelation and multiple sequences in the HR diagram. This evidence suggests that binary interactions may be a possible scenario for the formation of multiple stellar populations in GCs.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	COLOR-MAGNITUDE DIAGRAMS ; AGE STAR-CLUSTERS ; MAIN-SEQUENCE ; COLLISION PRODUCTS ; BLUE STRAGGLERS ; MASSIVE STARS ; GIANT STARS ; TURN-OFF ; NGC 188 ; EVOLUTION
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0004-637X/789/1/88/meta
语种	英语
WOS记录号	WOS:000338103400088
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4577]
专题	云南天文台_大样本恒星演化研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
推荐引用方式 GB/T 7714	Jiang DK,Han ZW,Li LF. BINARY INTERACTIONS AS A POSSIBLE SCENARIO FOR THE FORMATION OF MULTIPLE STELLAR POPULATIONS IN GLOBULAR CLUSTERS[J]. ASTROPHYSICAL JOURNAL,2014,789(1).
APA	Jiang DK,Han ZW,&Li LF.(2014).BINARY INTERACTIONS AS A POSSIBLE SCENARIO FOR THE FORMATION OF MULTIPLE STELLAR POPULATIONS IN GLOBULAR CLUSTERS.ASTROPHYSICAL JOURNAL,789(1).
MLA	Jiang DK,et al."BINARY INTERACTIONS AS A POSSIBLE SCENARIO FOR THE FORMATION OF MULTIPLE STELLAR POPULATIONS IN GLOBULAR CLUSTERS".ASTROPHYSICAL JOURNAL 789.1(2014).