Fates of the sub-stellar objects (FOSSO) I. Fates of the known brown dwarfs in main-sequence-BD binaries
文献类型：期刊论文
| 作者 | Chen, Zhangliang2,5; Jin, Hongming2,5; Ge HW(葛宏伟)1,3,4; Yu, Cong2,5; Wang, Kejun2,5; Chen, Dichang2,5; Ma, Bo2,5 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2026-03-16 |
| 卷号 | 707 |
| 关键词 | binaries: close brown dwarfs white dwarfs |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202557835 |
| 产权排序 | 第3完成单位 |
| 文献子类 | Article |
| 英文摘要 | Context. Understanding the survival and orbital evolution of brown dwarf (BD) companions during the post-main-sequence (MS) evolution of their host stars has become increasingly important, especially following recent discoveries of substellar companions around white dwarfs (WDs).Aims. We investigated the long-term evolution and final outcomes of BDs orbiting low-mass MS stars as these evolve into WDs. By comparing forward-modelled populations with observed WD-BD binaries, we tested evolutionary models and predicted the existence of yet-undetected systems. Methods. We employed the code Compact Object Mergers: Population Astrophysics and Statistics (COMPAS) to evolve observed MS-BD systems through the post-MS phases of their host stars into the WD stage, tracking orbital changes driven by mass loss, tides, and common-envelope (CE) evolution. Results. Our simulations reproduce a period gap in the distribution of detached WD-BD binaries, consistent with observations. We also identify a boundary separating detached and semi-detached systems in the period-mass diagram at orbital periods of similar to 1-2 hours, depending on the BD mass. Conclusions. We predict that a subset of currently known MS-BD binaries will survive post-MS evolution and emerge as detached WD-BD systems, while others will undergo CE evolution and potentially form cataclysmic variables with BD donors. Our results reproduce the observed period gap in WD-BD binaries and provide quantitative predictions for the role of CE efficiency in shaping their distribution. These findings indicate that many WD-BD systems remain undetected, motivating targeted searches using microlensing and high-contrast imaging techniques with next-generation large telescopes. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| WOS关键词 | COMMON-ENVELOPE EVOLUTION ; ECLIPSING WHITE-DWARF ; LOW-MASS STARS ; GIANT PLANET ; SUBSTELLAR COMPANION ; COOL COMPANIONS ; NEARBY STARS ; SDSS ; DESERT ; SUBDWARF |
| 资助项目 | National Key R&D Program of China[2021YFA1600403]; NSFC[12403071]; NSFC[12073092]; NSFC[12103097]; NSFC[12103098]; China Manned Space Project[CMS-CSST-2021-B09]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160201]; National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12525304] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001715510200001 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | National Key R&D Program of China[2021YFA1600403] ; NSFC[12403071, 12073092, 12103097, 12103098] ; China Manned Space Project[CMS-CSST-2021-B09] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB1160201] ; National Natural Science Foundation of China[12288102, 12525304] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29041]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 通讯作者 | Chen, Dichang; Ma, Bo |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, PR China; 2.CSST Science Center for the Guangdong-HongKong-Macau Great Bay Area, Sun Yat-sen University, Zhuhai 519082, PR China; 3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, PR China; 4.University of Chinese Academy of Sciences, Beijing 100049, PR China 5.School of Physics and Astronomy, Sun Yat-sen University, Zhuhai 519082, PR China; |
| 推荐引用方式 GB/T 7714 | Chen, Zhangliang,Jin, Hongming,Ge HW,et al. Fates of the sub-stellar objects (FOSSO) I. Fates of the known brown dwarfs in main-sequence-BD binaries[J]. ASTRONOMY & ASTROPHYSICS,2026,707. |
| APA | Chen, Zhangliang.,Jin, Hongming.,葛宏伟.,Yu, Cong.,Wang, Kejun.,...&Ma, Bo.(2026).Fates of the sub-stellar objects (FOSSO) I. Fates of the known brown dwarfs in main-sequence-BD binaries.ASTRONOMY & ASTROPHYSICS,707. |
| MLA | Chen, Zhangliang,et al."Fates of the sub-stellar objects (FOSSO) I. Fates of the known brown dwarfs in main-sequence-BD binaries".ASTRONOMY & ASTROPHYSICS 707(2026). |
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来源：云南天文台
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