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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
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume463Issue:4Pages:3449-3460
AbstractEmploying 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.
SubtypeArticle
KeywordBinaries: General Globular Clusters: General
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational 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
WOS KeywordHORIZONTAL-BRANCH STARS ; STELLAR ASTROPHYSICS MESA ; DWARF COOLING CURVE ; NA-O ANTICORRELATION ; HOT SUBDWARF STARS ; OMEGA-CENTAURI ; MILKY-WAY ; MULTIPLE POPULATIONS ; ECLIPSING BINARIES ; EVOLUTIONARY STATUS
Indexed BySCI
Language英语
Funding OrganizationNational 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 Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000393568200003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8268
Collection光学天文研究部
Affiliation1.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
Recommended Citation
GB/T 7714
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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