Asteroseismic rotation rates of hot subdwarf B stars hint at transient accretion from leftover common envelope matter
文献类型：期刊论文
| 作者 | Moyano, Facundo David2; Ge HW(葛宏伟)2; Han ZW(韩占文)2; Bordadágua, Beatriz3,4; Uzundag, Murat5; Podsiadlowski, Philipp1,3,6; Schaffenroth, Veronika7; Chen XF(陈雪飞)2; Liu ZW(柳正伟)2 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2026-06 |
| 卷号 | 548期号:4 |
| 关键词 | asteroseismology methods: numerical binaries: close stars: evolution stars: rotation subdwarfs |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stag790 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Asteroseismology enabled measuring the rotation rate in the deep stellar interiors of stars across several evolutionary phases, advancing the theory of angular momentum transport in single stars from the main sequence to the white dwarf phase. However, binary stellar evolution products have not yet been studied in the context of angular momentum transport constrained by asteroseismology. Hot subdwarf B (sdB) stars can pulsate in non-radial modes, enabling probing of their internal rotation. Those in binary systems form through mass transfer, thus they can be used to probe theories of internal rotation in post-mass-transfer stars. Here, we interpret observed asteroseismic core and envelope rotation rates of sdB stars in unsynchronized binary systems that formed through the common-envelope channel, using stellar evolution models of rotating sdB stars with internal magnetic fields. We find that when sdB stars form with the angular momentum content of red giant cores prior to common-envelope ejection, their predicted core rotation rates are 2-10 times lower than measured asteroseismic rotation rates, and their envelope rotation rates are lower by 2-5 orders of magnitude. This suggests that the angular momentum content of sdB stars increases during their formation. Since sdB stars in close binary systems may host circumstellar matter from a past common-envelope ejection, we show that if they accrete a small amount of matter, the combination of internal magnetic fields with angular momentum transfer through accretion spins up both the core and envelope to match their measured asteroseismic rotation rates. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| WOS关键词 | ANGULAR-MOMENTUM TRANSPORT ; INTERNAL GRAVITY-WAVES ; PLUS DM BINARIES ; DA WHITE-DWARFS ; CIRCUMBINARY ACCRETION ; CONVECTIVE CORE ; MIXED-MODES ; MAGNETIC-FIELDS ; K2 OBSERVATIONS ; ADIABATIC SURVEY |
| 资助项目 | Research Foundation Flanders (FWO)[1247624N]; ERC Consolidator Grant Dipolar Sound[101000296]; National Natural Science Foundation of China (NSFC)[12288102]; National Natural Science Foundation of China (NSFC)[12090043]; National Natural Science Foundation of China (NSFC)[12125303]; National Natural Science Foundation of China (NSFC)[12525304]; National Key R&D Program of China[2021YFA1600403]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160201]; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB35003]; Yunnan Fundamental Research Projects[202401BC070007]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN36001] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001760262500001 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Research Foundation Flanders (FWO)[1247624N] ; ERC Consolidator Grant Dipolar Sound[101000296] ; National Natural Science Foundation of China (NSFC)[12288102, 12090043, 12125303, 12525304] ; National Key R&D Program of China[2021YFA1600403] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160201] ; Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202305AB35003] ; Yunnan Fundamental Research Projects[202401BC070007] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN36001] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29203]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 通讯作者 | Moyano, Facundo David |
| 作者单位 | 1.University of Oxford, St Edmund Hall, Oxford OX1 4AR, UK; 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; 3.Heidelberger Institut für Theoretische Studien (HITS), Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg, Germany; 4.Center for Astronomy (ZAH/LSW), Heidelberg University, Königstuhl 12, D-69117 Heidelberg, Germany; 5.Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium; 6.London Centre for Stellar Astrophysics, Vauxhall, London, UK; 7.Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany |
| 推荐引用方式 GB/T 7714 | Moyano, Facundo David,Ge HW,Han ZW,et al. Asteroseismic rotation rates of hot subdwarf B stars hint at transient accretion from leftover common envelope matter[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2026,548(4). |
| APA | Moyano, Facundo David.,葛宏伟.,韩占文.,Bordadágua, Beatriz.,Uzundag, Murat.,...&柳正伟.(2026).Asteroseismic rotation rates of hot subdwarf B stars hint at transient accretion from leftover common envelope matter.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,548(4). |
| MLA | Moyano, Facundo David,et al."Asteroseismic rotation rates of hot subdwarf B stars hint at transient accretion from leftover common envelope matter".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 548.4(2026). |
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来源：云南天文台
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