YNAO OpenIR  > 大样本恒星演化研究组
New insights into the helium star formation channel of AM CVn systems with explanations of Gaia14aae and ZTFJ1637+49
Sarkar, Arnab1; Ge HW(葛宏伟)1,2,3; Tout, Christopher A1
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2023-02
卷号519期号:2页码:2567-2577
DOI10.1093/mnras/stac3688
产权排序第2完成单位
收录类别SCI ; EI
关键词binaries: close stars: magnetic field stars: mass-loss novae cataclysmic variables stars: rotation white dwarfs
摘要

We model helium-rich stars with solar metallicity (X = 0.7, Z = 0.02) progenitors that evolve to form AM Canum Venaticorum systems through a helium-star formation channel, with the aim to explain the observed properties of Gaia14aae and ZTFJ1637+49. We show that semidegenerate, H-exhausted (X <= 10(-5)), He-rich (Y approximate to 0.98) donors can be formed after a common envelope evolution (CEE) phase if either additional sources of energy are used to eject the common envelope, or a different formalism of CEE is implemented. We follow the evolution of such binary systems after the CEE phase using the Cambridge stellar evolution code when they consist of a He-star and a white dwarf accretor, and report that the mass, radius, and mass-transfer rate of the donor, the orbital period of the system, and the lack of hydrogen in the spectrum of Gaia14aae and ZTFJ1637+49 match well with our modelled trajectories wherein, after the CEE phase Roche lobe overflow is governed not only by the angular momentum loss (AML) owing to gravitational wave radiation (AML(GR)) but also an additional AML owing to alpha-omega dynamos in the donor. This additional AML is modelled with our double-dynamo (DD) model of magnetic braking in the donor star. We explain that this additional AML is just a consequence of extending the DD model from canonical cataclysmic variable donors to evolved donors. We show that none of our modelled trajectories match with Gaia14aae or ZTFJ1637+49 if the systems are modelled only with AML(GR).

资助项目Gates Cambridge Trust ; NSFC[12173081] ; key research programme of frontier sciences, CAS[ZDBS-LY-7005] ; Yunnan Fundamental Research Projects[202101AV070001] ; Churchill College
项目资助者Gates Cambridge Trust ; NSFC[12173081] ; key research programme of frontier sciences, CAS[ZDBS-LY-7005] ; Yunnan Fundamental Research Projects[202101AV070001] ; Churchill College
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS记录号WOS:000910908900018
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LOW-MASS ; CATACLYSMIC VARIABLES ; ENVELOPE EJECTION ; EVOLUTION ; SPECTROSCOPY ; POPULATION ; PARAMETER ; EMISSION ; DONORS
EI入藏号20232014093625
EI主题词White dwarfs
EI分类号641.3 Mass Transfer - 657.2 Extraterrestrial Physics and Stellar Phenomena - 804 Chemical Products Generally - 931.5 Gravitation, Relativity and String Theory
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/25825
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
通讯作者Sarkar, Arnab; Ge HW(葛宏伟); Tout, Christopher A
作者单位1.Institute of Astronomy, The Observatories, Madingley Road, Cambridge CB3 OHA, UK;
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
3.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, Kunming 650216, China
通讯作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Sarkar, Arnab,Ge HW,Tout, Christopher A. New insights into the helium star formation channel of AM CVn systems with explanations of Gaia14aae and ZTFJ1637+49[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,519(2):2567-2577.
APA Sarkar, Arnab,Ge HW,&Tout, Christopher A.(2023).New insights into the helium star formation channel of AM CVn systems with explanations of Gaia14aae and ZTFJ1637+49.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,519(2),2567-2577.
MLA Sarkar, Arnab,et al."New insights into the helium star formation channel of AM CVn systems with explanations of Gaia14aae and ZTFJ1637+49".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 519.2(2023):2567-2577.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
New insights into th(1934KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Sarkar, Arnab]的文章
[Ge HW(葛宏伟)]的文章
[Tout, Christopher A]的文章
百度学术
百度学术中相似的文章
[Sarkar, Arnab]的文章
[Ge HW(葛宏伟)]的文章
[Tout, Christopher A]的文章
必应学术
必应学术中相似的文章
[Sarkar, Arnab]的文章
[Ge HW(葛宏伟)]的文章
[Tout, Christopher A]的文章
相关权益政策
暂无数据
收藏/分享
文件名: New insights into the helium star formation channel of AM CVn systems with explanations of Gaia14aae and ZTFJ1637+49.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。