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A possible formation channel for blue hook stars in globular cluster - II. Effects of metallicity, mass ratio, tidal enhancement efficiency and helium abundance
Lei, Zhenxin1,2; Zhao, Gang2; Zeng, Aihua1; Shen, Lihua1; Lan, Zhongjian1; Jiang, Dengkai3,4; Han, Zhanwen3,4
2016-12-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号463期号:4页码:3449-3460
摘要Employing tidally enhanced stellar wind, we studied in binaries the effects of metallicity, mass ratio of primary to secondary, tidal enhancement efficiency and helium abundance on the formation of blue hook (BHk) stars in globular clusters (GCs). A total of 28 sets of binary models combined with different input parameters are studied. For each set of binary model, we presented a range of initial orbital periods that is needed to produce BHk stars in binaries. All the binary models could produce BHk stars within different range of initial orbital periods. We also compared our results with the observation in the T-eff-logg diagram of GC NGC 2808 and omega Cen. Most of the BHk stars in these two GCs locate well in the region predicted by our theoretical models, especially when C/N-enhanced model atmospheres are considered. We found that mass ratio of primary to secondary and tidal enhancement efficiency have little effects on the formation of BHk stars in binaries, while metallicity and helium abundance would play important roles, especially for helium abundance. Specifically, with helium abundance increasing in binary models, the space range of initial orbital periods needed to produce BHk stars becomes obviously wider, regardless of other input parameters adopted. Our results were discussed with recent observations and other theoretical models.
文章类型Article
关键词Binaries: General Globular Clusters: General
WOS标题词Science & Technology ; Physical Sciences
资助者National Natural Science Foundation of China(11503016 ; National Natural Science Foundation of China(11503016 ; Youth Fund project of Hunan Provincial Education Department(15B214) ; Youth Fund project of Hunan Provincial Education Department(15B214) ; Natural Science Foundation of China(11390374 ; Natural Science Foundation of China(11390374 ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005) ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005) ; Chinese Academy of Sciences(XDB09010202 ; Chinese Academy of Sciences(XDB09010202 ; 11390371 ; 11390371 ; 11521303) ; 11521303) ; KJZD-EW-M06-01) ; KJZD-EW-M06-01) ; 11233004 ; 11233004 ; 11573061) ; 11573061) ; National Natural Science Foundation of China(11503016 ; National Natural Science Foundation of China(11503016 ; Youth Fund project of Hunan Provincial Education Department(15B214) ; Youth Fund project of Hunan Provincial Education Department(15B214) ; Natural Science Foundation of China(11390374 ; Natural Science Foundation of China(11390374 ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005) ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005) ; Chinese Academy of Sciences(XDB09010202 ; Chinese Academy of Sciences(XDB09010202 ; 11390371 ; 11390371 ; 11521303) ; 11521303) ; KJZD-EW-M06-01) ; KJZD-EW-M06-01) ; 11233004 ; 11233004 ; 11573061) ; 11573061)
DOI10.1093/mnras/stw2242
关键词[WOS]HORIZONTAL-BRANCH STARS ; STELLAR ASTROPHYSICS MESA ; DWARF COOLING CURVE ; NA-O ANTICORRELATION ; HOT SUBDWARF STARS ; OMEGA-CENTAURI ; MILKY-WAY ; MULTIPLE POPULATIONS ; ECLIPSING BINARIES ; EVOLUTIONARY STATUS
收录类别SCI
语种英语
资助者National Natural Science Foundation of China(11503016 ; National Natural Science Foundation of China(11503016 ; Youth Fund project of Hunan Provincial Education Department(15B214) ; Youth Fund project of Hunan Provincial Education Department(15B214) ; Natural Science Foundation of China(11390374 ; Natural Science Foundation of China(11390374 ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005) ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005) ; Chinese Academy of Sciences(XDB09010202 ; Chinese Academy of Sciences(XDB09010202 ; 11390371 ; 11390371 ; 11521303) ; 11521303) ; KJZD-EW-M06-01) ; KJZD-EW-M06-01) ; 11233004 ; 11233004 ; 11573061) ; 11573061) ; National Natural Science Foundation of China(11503016 ; National Natural Science Foundation of China(11503016 ; Youth Fund project of Hunan Provincial Education Department(15B214) ; Youth Fund project of Hunan Provincial Education Department(15B214) ; Natural Science Foundation of China(11390374 ; Natural Science Foundation of China(11390374 ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005) ; Science and Technology Innovation Talent Programme of the Yunnan Province(2013HA005) ; Chinese Academy of Sciences(XDB09010202 ; Chinese Academy of Sciences(XDB09010202 ; 11390371 ; 11390371 ; 11521303) ; 11521303) ; KJZD-EW-M06-01) ; KJZD-EW-M06-01) ; 11233004 ; 11233004 ; 11573061) ; 11573061)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000393568200003
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8268
专题光学天文研究部
作者单位1.Shaoyang Univ, Dept Sci, Shaoyang 422000, Peoples R China
2.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
3.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China
4.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
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Lei, Zhenxin,Zhao, Gang,Zeng, Aihua,et al. A possible formation channel for blue hook stars in globular cluster - II. Effects of metallicity, mass ratio, tidal enhancement efficiency and helium abundance[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,463(4):3449-3460.
APA Lei, Zhenxin.,Zhao, Gang.,Zeng, Aihua.,Shen, Lihua.,Lan, Zhongjian.,...&Han, Zhanwen.(2016).A possible formation channel for blue hook stars in globular cluster - II. Effects of metallicity, mass ratio, tidal enhancement efficiency and helium abundance.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,463(4),3449-3460.
MLA Lei, Zhenxin,et al."A possible formation channel for blue hook stars in globular cluster - II. Effects of metallicity, mass ratio, tidal enhancement efficiency and helium abundance".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 463.4(2016):3449-3460.
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