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A New Pathway to Single Be Stars: Ejected Companions from Type Ia Supernovae

文献类型：期刊论文

作者Bao YC(鲍昱辰)1,2,3; Li ZW(李振威)1,3; Ge HW(葛宏伟)1,3; Chen HL(陈海亮)1,3; Jiang DK(姜登凯)1,3; Chen XF(陈雪飞)1,2,3; Han ZW(韩占文)1,2,3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2026-09-24
卷号26期号:9
关键词stars: emission-line, Be (stars:) binaries (including multiple): close (stars:) supernovae: general
ISSN号1674-4527
DOI10.1088/1674-4527/ae5f6e
产权排序第1完成单位
文献子类Article
英文摘要Be stars are rapid rotators generally produced by binary interactions. The single Be stars in the observations pose challenges to the Be star formation theory. In this paper, we propose a new pathway for the formation of single Be stars, in which the Be star is taken as the ejected companion star from a Type Ia supernova (SN Ia) explosion. Recent numerical simulations suggest that explosive oxygen burning, initiated via the convective Urca process in certain helium (He) stars near the Chandrasekhar mass limit, can set off an SN Ia. Based on this proposition, we further demonstrate that about 0.4% of He star + main-sequence (MS) star binaries may evolve into single Be stars, where the MS star is spun up due to the mass accretion from the He star, and then the He star explodes as an SN Ia. We employ detailed binary evolutionary simulations and find the parameter space that would produce single Be stars via the SN Ia channel. Around 22% of Be stars from the SN Ia progenitor channel exhibit peculiar tangential velocities exceeding 24 km s(-1), classifying them as runaway stars. This suggests that the SN Ia channel plays a meaningful role in forming single Be stars, particularly within the runaway star population.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND
WOS关键词SURVIVING COMPANIONS ; HELIUM STARS ; POPULATION SYNTHESIS ; MASSIVE STARS ; B-STARS ; CONVECTIVE BOUNDARIES ; STELLAR EVOLUTION ; BINARY-SYSTEMS ; OPEN CLUSTERS ; OBE STARS
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160303]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160201]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160000]; National Natural Science Foundation of China (NSFC)[12125303]; National Natural Science Foundation of China (NSFC)[12525304]; National Natural Science Foundation of China (NSFC)[12288102]; National Natural Science Foundation of China (NSFC)[12473034]; National Natural Science Foundation of China (NSFC)[12273105]; National Natural Science Foundation of China (NSFC)[11703081]; National Natural Science Foundation of China (NSFC)[11422324]; National Natural Science Foundation of China (NSFC)[12073070]; National Natural Science Foundation of China (NSFC)[12333008]; National Natural Science Foundation of China (NSFC)[12422305]; National Natural Science Foundation of China (NSFC)[12473033]; CAS Project for Young Scientists in Basic Research[YSBR-148]; National Key R&D Program of China[2021YFA1600403]; National Key R&D Program of China[2021YFA1600400]; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB350003]; Yunnan Key Laboratory of Supernova Research[202302AN360001]; Yunnan Key Laboratory of Supernova Research[202201BC070003]; Yunnan Fundamental Research Projects[202401AT070139]; New Cornerstone Science Foundation; Young Talent Project of Yunnan Revitalization Talent Support Program; Key Research Program of Frontier Sciences of CAS[ZDBS-LY-7005]; Stellar Astrophysics Group at Yunnan Observatories, Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001764092200001
出版者IOP Publishing Ltd
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160303, XDB1160201, XDB1160000] ; National Natural Science Foundation of China (NSFC)[12125303, 12525304, 12288102, 12473034, 12273105, 11703081, 11422324, 12073070, 12333008, 12422305, 12473033] ; CAS Project for Young Scientists in Basic Research[YSBR-148] ; National Key R&D Program of China[2021YFA1600403, 2021YFA1600400] ; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB350003] ; Yunnan Key Laboratory of Supernova Research[202302AN360001, 202201BC070003] ; Yunnan Fundamental Research Projects[202401AT070139] ; New Cornerstone Science Foundation ; Young Talent Project of Yunnan Revitalization Talent Support Program ; Key Research Program of Frontier Sciences of CAS[ZDBS-LY-7005] ; Stellar Astrophysics Group at Yunnan Observatories, Chinese Academy of Sciences
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/29221]  
专题云南天文台_大样本恒星演化研究组
通讯作者Bao YC(鲍昱辰)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, China; baoyuchen@ynao.ac.cn, lizw@ynao.ac.cn, cxf@ynao.ac.cn;
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences (UCAS), Beijing 100049, China;
3.International Centre of Supernovae (ICESUN), Yunnan Key Laboratory, Kunming 650216, China
推荐引用方式
GB/T 7714		 Bao YC,Li ZW,Ge HW,et al. A New Pathway to Single Be Stars: Ejected Companions from Type Ia Supernovae[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2026,26(9).
APA 鲍昱辰.,李振威.,葛宏伟.,陈海亮.,姜登凯.,...&韩占文.(2026).A New Pathway to Single Be Stars: Ejected Companions from Type Ia Supernovae.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,26(9).
MLA 鲍昱辰,et al."A New Pathway to Single Be Stars: Ejected Companions from Type Ia Supernovae".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 26.9(2026).

入库方式： OAI收割

来源：云南天文台

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