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

doi:10.1093/mnras/staf165

YNAO OpenIR > 大样本恒星演化研究组

	Detection of ubiquitous circumbinary matter in hot subdwarfs formed from common-envelope ejections
	Li JD(李江丹)1,2 ; Wolf, Christian 3,4; Li J(李蛟)1 ; Luo, Yangping 5; Zhao, Jingkun 6; Chen, Bingqiu 7; Zhang, Lin 7; Jia S(贾石)1 ; Chen XF(陈雪飞)1,2,8,9 ; Han ZW(韩占文)1,2,8,9
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2025-02-04
卷号	537 期号:2 页码:1950-1962
DOI	10.1093/mnras/staf165
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	binaries: close circumstellar matter stars: evolution subdwarfs
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.
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]
项目资助者	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]
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	OXFORD UNIV PRESS
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN	0035-8711
URL	查看原文
WOS记录号	WOS:001413786600001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BLANKETED MODEL ATMOSPHERES ; LUMINOUS RED NOVA ; GAIA DR2 ; STELLAR SPECTRA ; B-STARS ; ALL-SKY ; INTERSTELLAR ; BINARIES ; ABSORPTION ; RESOLUTION
EI入藏号	20250617842300
EI主题词	Supernovae
EI分类号	1302 - 1302.1.2
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/28126
专题	大样本恒星演化研究组中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences (CAS), 396 Yangfangwang, Guandu District, Kunming 650216, P.R. China; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, P.R. China; 3.Research School of Astronomy and Astrophysics, Australian National University, Weston Creek ACT 2611, Australia; 4.Centre for Gravitational Astrophysics, Australian National University, Canberra ACT 2600, Australia; 5.Department of Astronomy, China West Normal University, Nanchong 637002, P.R. China; 6.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, P.R. China; 7.South-Western Institute for Astronomy Research, Yunnan University, Kunming 650504, P.R. China; 8.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, P.R. China; 9.University of Chinese Academy of Sciences, Beijing 100049, China
第一作者单位	中国科学院云南天文台
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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