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Detection of ubiquitous circumbinary matter in hot subdwarfs formed from common-envelope ejections

文献类型：期刊论文

作者Li JD(李江丹)1,9; Wolf, Christian7,8; Li J(李蛟)9; Luo, Yangping6; Zhao, Jingkun5; Chen, Bingqiu4; Zhang, Lin4; Jia S(贾石)9; Chen XF(陈雪飞)1,2,3,9; Han ZW(韩占文)1,2,3,9
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2025-02-04
卷号537期号:2页码:1950-1962
关键词binaries: close circumstellar matter stars: evolution subdwarfs
ISSN号0035-8711
DOI10.1093/mnras/staf165
产权排序第1完成单位
文献子类Article
英文摘要The formation of compact binary systems is largely driven by their evolution through a common envelope (CE) phase, crucial for understanding phenomena such as type Ia supernovae and black hole mergers. Despite their importance, direct observational evidence for CE material has been elusive due to the transient nature of these envelopes. Numerical simulations suggest that some envelope material may persist post-ejection. In this study, we investigate circumstellar material (CSM) surrounding hot subdwarf (sdB) stars, focusing on material ejected during the CE phase of binary evolution. We analyse CaII K absorption lines in 727 sdB candidates from the LAMOST-LRS survey, selecting 145 stars with strong absorption features, indicating the presence of CSM. We compare the velocities of the CaII K lines with the systemic velocities of sdB binaries, confirming that the material originates from ejected CE material. The results show that the CSM persists long after the CE event, suggesting the formation of a stable, long-lived circumstellar environment around sdB stars. This study enhances our understanding of the role of CSM in post-CE evolution and provides new insights into the physical processes shaping the evolution of sdB binaries.
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BLANKETED MODEL ATMOSPHERES ; LUMINOUS RED NOVA ; GAIA DR2 ; STELLAR SPECTRA ; B-STARS ; ALL-SKY ; INTERSTELLAR ; BINARIES ; ABSORPTION ; RESOLUTION
资助项目National Natural Science Foundation of China[12288102]; National Natural Science Foundation of China[12125303]; National Natural Science Foundation of China[12090040/3]; National Natural Science Foundation of China[12403040]; National Key R&D Program of China[2021YFA1600401/3]; International Centre of Supernovae[202201BC070003]; Yunnan Key Laboratory[202302AN360001]; Yunnan Revitalization Talent Support Programme Science & Technology Champion Project[202305AB350003]; China Manned Space Project[CMS-CSST-2021-A10]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001413786600001
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China[12288102, 12125303, 12090040/3, 12403040] ; National Key R&D Program of China[2021YFA1600401/3] ; International Centre of Supernovae[202201BC070003] ; Yunnan Key Laboratory[202302AN360001] ; Yunnan Revitalization Talent Support Programme Science & Technology Champion Project[202305AB350003] ; China Manned Space Project[CMS-CSST-2021-A10]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28126]  
专题云南天文台_大样本恒星演化研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, P.R. China;
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, P.R. China;
4.South-Western Institute for Astronomy Research, Yunnan University, Kunming 650504, P.R. China;
5.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, P.R. China;
6.Department of Astronomy, China West Normal University, Nanchong 637002, P.R. China;
7.Centre for Gravitational Astrophysics, Australian National University, Canberra ACT 2600, Australia;
8.Research School of Astronomy and Astrophysics, Australian National University, Weston Creek ACT 2611, Australia;
9.Yunnan Observatories, Chinese Academy of Sciences (CAS), 396 Yangfangwang, Guandu District, Kunming 650216, P.R. China;
推荐引用方式
GB/T 7714		 Li JD,Wolf, Christian,Li J,et al. Detection of ubiquitous circumbinary matter in hot subdwarfs formed from common-envelope ejections[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2025,537(2):1950-1962.
APA 李江丹.,Wolf, Christian.,李蛟.,Luo, Yangping.,Zhao, Jingkun.,...&韩占文.(2025).Detection of ubiquitous circumbinary matter in hot subdwarfs formed from common-envelope ejections.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,537(2),1950-1962.
MLA 李江丹,et al."Detection of ubiquitous circumbinary matter in hot subdwarfs formed from common-envelope ejections".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 537.2(2025):1950-1962.

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