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A Study of Subsurface Convection Zones of Fast Rotating Massive Stars

文献类型：期刊论文

作者He, Xiaolong1,2; Lu, Guoliang1,2; Zhu, Chunhua2; Li, Lin2; Liu, Helei2; Guo, Sufen2; Lu, Xizhen2; Li, Lei2; Wang, Hao2
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2025-03-01
卷号25期号:3页码:035002
关键词stars: early-type stars: evolution stars: massive stars: rotation convection
ISSN号1674-4527
DOI10.1088/1674-4527/adb47e
产权排序2
英文摘要The subsurface convective zones (CZs) of massive stars significantly influence many of their key characteristics. Previous studies have paid little attention to the impact of rotation on the subsurface CZ, so we aim to investigate the evolution of this zone in rapidly rotating massive stars. We use the Modules for Experiments in Stellar Astrophysics to simulate the subsurface CZs of massive stars during the main sequence phase. We establish stellar models with initial masses ranging from 5 M-circle dot to 120 M-circle dot, incorporating four metallicities (Z = 0.02, 0.006, 0.002, and 0.0001) and three rotational velocities (omega/omega(crit) = 0, omega/omega(crit) = 0.50, and omega/omega(crit) = 0.75). We find that rapid rotation leads to an expansion of the subsurface CZ, increases convective velocities, and promotes the development of this zone. Additionally, subsurface CZs can also emerge in stars with lower metallicities. Comparing our models with observations of massive stars in the Galaxy, the Large Magellanic Cloud, and the Small Magellanic Cloud, we find that rotating models better encompass the observed samples. Rotation significantly influences the evolution of the subsurface CZ in massive stars. By comparing with the observed microturbulence on the surfaces of OB stars, we propose that the subsurface CZs may be one of the sources of microturbulence.
WOS关键词O-TYPE STARS ; VLT-FLAMES SURVEY ; B-TYPE STARS ; LOW-FREQUENCY VARIABILITY ; MAGNETIC-FIELDS ; NITROGEN ABUNDANCES ; TURBULENT PRESSURE ; STELLAR EVOLUTION ; ATMOSPHERIC PARAMETERS ; CHEMICAL-COMPOSITIONS
资助项目National Natural Science Foundation of China[U2031204] ; National Natural Science Foundation of China[12163005] ; National Natural Science Foundation of China[12373038] ; National Natural Science Foundation of China[12288102] ; National Natural Science Foundation of China[12263006] ; China Manned Space Project[CMSCSST-2021-A10] ; Natural Science Foundation of Xinjiang[2022D01D85] ; Natural Science Foundation of Xinjiang[2022TSYCLJ0006] ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region[2022A03013-3]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001435418000001
出版者IOP Publishing Ltd
资助机构National Natural Science Foundation of China ; China Manned Space Project ; Natural Science Foundation of Xinjiang ; Major Science and Technology Program of Xinjiang Uygur Autonomous Region
源URL[http://ir.xao.ac.cn/handle/45760611-7/7478]  
专题射电天文研究室_理论天体物理研究团组
通讯作者Lu, Guoliang; Zhu, Chunhua
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China
推荐引用方式
GB/T 7714		 He, Xiaolong,Lu, Guoliang,Zhu, Chunhua,et al. A Study of Subsurface Convection Zones of Fast Rotating Massive Stars[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2025,25(3):035002.
APA He, Xiaolong.,Lu, Guoliang.,Zhu, Chunhua.,Li, Lin.,Liu, Helei.,...&Wang, Hao.(2025).A Study of Subsurface Convection Zones of Fast Rotating Massive Stars.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,25(3),035002.
MLA He, Xiaolong,et al."A Study of Subsurface Convection Zones of Fast Rotating Massive Stars".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 25.3(2025):035002.

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来源：新疆天文台

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