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A Roche lobe-filling hot subdwarf and white dwarf binary: possible detection of an ejected common envelope

文献类型：期刊论文

作者Li, Jiangdan1,2,3; Onken, Christopher A.4,5; Wolf, Christian4,5; Nemeth, Peter6,7; Bessell, Mike4; Li, Zhenwei1,2; Zhang, Xiaobin8; Li, Jiao9; Wang, Luqian1; Li, Lifang1,2
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2022-08-05
卷号515期号:3页码:3370-3382
ISSN号0035-8711
关键词binaries: close stars: individual: J192054.50-200135.5 subdwarfs white dwarfs
DOI10.1093/mnras/stac1768
英文摘要Binaries consisting of a hot subdwarf star and an accreting white dwarf (WD) are sources of gravitational wave radiation at low frequencies and possible progenitors of Type Ia supernovae if the WD mass is large enough. Here, we report the discovery of the third binary known of this kind: It consists of a hot subdwarf O (sdO) star and a WD with an orbital period of 3.495 h and an orbital shrinkage of 0.1 s in 6 yr. The sdO star overfills its Roche lobe and likely transfers mass to the WD via an accretion disc. From spectroscopy, we obtain an effective temperature of T-eff = 54 240 +/- 1840 K and a surface gravity of log g = 4.841 +/- 0.108 for the sdO star. From the light curve analysis, we obtain an sdO mass of M-sdO = 0.55 M-circle dot and a mass ratio of q = M-WD/M-sdO = 0.738 +/- 0.001. Also, we estimate that the disc has a radius of similar to 0.41 R-circle dot and a thickness of similar to 0.18 R-circle dot. The origin of this binary is probably a common envelope ejection channel, where the progenitor of the sdO star is either a red giant branch star or, more likely, an early asymptotic giant branch star; the sdO star will subsequently evolve into a WD and merge with its WD companion, likely resulting in an R Coronae Borealis (R CrB) star. The outstanding feature in the spectrum of this object is strong Ca H&K lines, which are blue-shifted by similar to 200 km s(-1) and likely originate from the recently ejected common envelope, and we estimated that the remnant common envelope (CE) material in the binary system has a density similar to 6 x 10(-1)0 g cm(-3).
WOS关键词B-STARS ; CONVECTIVE BOUNDARIES ; ORBITAL DECAY ; MASS-TRANSFER ; EVOLUTION ; INTERSTELLAR ; ORIGIN ; APPROXIMATIONS ; DETONATIONS ; KINEMATICS
资助项目National Natural Science Foundation of China[12090040/3] ; National Natural Science Foundation of China[12125303] ; National Natural Science Foundation of China[11733008] ; National Natural Science Foundation of China[12103086] ; National Key R&D Program of China[2021YFA1600401/3] ; China Manned Space Project[CMS-CSST-2021-A10] ; Australian Research Council (ARC)[DP190100252] ; Grant Agency of the Czech Republic[GA.CR 22-34467S] ; Polish National Science Centre[UMO-2017/26/E/ST9/00703] ; Polish National Science Centre[UMO-2017/25/B/ST9/02218] ; National Aeronautics and Space Administration ; NASA Science Mission Directorate ; NASA[NAS 5-26555] ; Australian Research Council[LE130100104] ; Australian National University ; Swinburne University of Technology ; University of Queensland ; University of Western Australia ; University of Melbourne ; Curtin University of Technology ; Monash University, ; Australian Astronomical Observatory ; Astronomy Australia Limited (AAL) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; the Australian National Data Service Projects (ANDS) ; [RVO:67985815]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000836707600002
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; China Manned Space Project ; China Manned Space Project ; Australian Research Council (ARC) ; Australian Research Council (ARC) ; Grant Agency of the Czech Republic ; Grant Agency of the Czech Republic ; Polish National Science Centre ; Polish National Science Centre ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA Science Mission Directorate ; NASA Science Mission Directorate ; NASA ; NASA ; Australian Research Council ; Australian Research Council ; Australian National University ; Australian National University ; Swinburne University of Technology ; Swinburne University of Technology ; University of Queensland ; University of Queensland ; University of Western Australia ; University of Western Australia ; University of Melbourne ; University of Melbourne ; Curtin University of Technology ; Curtin University of Technology ; Monash University, ; Monash University, ; Australian Astronomical Observatory ; Australian Astronomical Observatory ; Astronomy Australia Limited (AAL) ; Astronomy Australia Limited (AAL) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; the Australian National Data Service Projects (ANDS) ; the Australian National Data Service Projects (ANDS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; China Manned Space Project ; China Manned Space Project ; Australian Research Council (ARC) ; Australian Research Council (ARC) ; Grant Agency of the Czech Republic ; Grant Agency of the Czech Republic ; Polish National Science Centre ; Polish National Science Centre ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA Science Mission Directorate ; NASA Science Mission Directorate ; NASA ; NASA ; Australian Research Council ; Australian Research Council ; Australian National University ; Australian National University ; Swinburne University of Technology ; Swinburne University of Technology ; University of Queensland ; University of Queensland ; University of Western Australia ; University of Western Australia ; University of Melbourne ; University of Melbourne ; Curtin University of Technology ; Curtin University of Technology ; Monash University, ; Monash University, ; Australian Astronomical Observatory ; Australian Astronomical Observatory ; Astronomy Australia Limited (AAL) ; Astronomy Australia Limited (AAL) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; the Australian National Data Service Projects (ANDS) ; the Australian National Data Service Projects (ANDS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; China Manned Space Project ; China Manned Space Project ; Australian Research Council (ARC) ; Australian Research Council (ARC) ; Grant Agency of the Czech Republic ; Grant Agency of the Czech Republic ; Polish National Science Centre ; Polish National Science Centre ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA Science Mission Directorate ; NASA Science Mission Directorate ; NASA ; NASA ; Australian Research Council ; Australian Research Council ; Australian National University ; Australian National University ; Swinburne University of Technology ; Swinburne University of Technology ; University of Queensland ; University of Queensland ; University of Western Australia ; University of Western Australia ; University of Melbourne ; University of Melbourne ; Curtin University of Technology ; Curtin University of Technology ; Monash University, ; Monash University, ; Australian Astronomical Observatory ; Australian Astronomical Observatory ; Astronomy Australia Limited (AAL) ; Astronomy Australia Limited (AAL) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; the Australian National Data Service Projects (ANDS) ; the Australian National Data Service Projects (ANDS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; China Manned Space Project ; China Manned Space Project ; Australian Research Council (ARC) ; Australian Research Council (ARC) ; Grant Agency of the Czech Republic ; Grant Agency of the Czech Republic ; Polish National Science Centre ; Polish National Science Centre ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; NASA Science Mission Directorate ; NASA Science Mission Directorate ; NASA ; NASA ; Australian Research Council ; Australian Research Council ; Australian National University ; Australian National University ; Swinburne University of Technology ; Swinburne University of Technology ; University of Queensland ; University of Queensland ; University of Western Australia ; University of Western Australia ; University of Melbourne ; University of Melbourne ; Curtin University of Technology ; Curtin University of Technology ; Monash University, ; Monash University, ; Australian Astronomical Observatory ; Australian Astronomical Observatory ; Astronomy Australia Limited (AAL) ; Astronomy Australia Limited (AAL) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; Australian Government through the Commonwealth's Education Investment Fund (EIF) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National Collaborative Research Infrastructure Strategy (NCRIS) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; National eResearch Collaboration Tools and Resources (NeCTAR) ; the Australian National Data Service Projects (ANDS) ; the Australian National Data Service Projects (ANDS)
源URL[http://ir.bao.ac.cn/handle/114a11/87602]  
专题中国科学院国家天文台
通讯作者Li, Jiangdan; Wolf, Christian; Han, Zhanwen
作者单位1.Chinese Acad Sci, Yunnan Observ, CAS, 396 Yangfangwang, Kunming 650011, Yunnan, Peoples R China
2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
4.Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia
5.Australian Natl Univ, Ctr Gravitat Astrophys, Canberra, ACT 2600, Australia
6.Czech Acad Sci, Stellar Dept, Astron Inst, CZ-25165 Ondrejov, Czech Republic
7.Astroserver Org, Fo ter 1, H-8533 Malomsok, Hungary
8.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
9.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100101, Peoples R China
10.China West Normal Univ, Dept Astron, Nanchong 637002, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jiangdan,Onken, Christopher A.,Wolf, Christian,et al. A Roche lobe-filling hot subdwarf and white dwarf binary: possible detection of an ejected common envelope[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,515(3):3370-3382.
APA Li, Jiangdan.,Onken, Christopher A..,Wolf, Christian.,Nemeth, Peter.,Bessell, Mike.,...&Han, Zhanwen.(2022).A Roche lobe-filling hot subdwarf and white dwarf binary: possible detection of an ejected common envelope.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,515(3),3370-3382.
MLA Li, Jiangdan,et al."A Roche lobe-filling hot subdwarf and white dwarf binary: possible detection of an ejected common envelope".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 515.3(2022):3370-3382.

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