Helium enrichment during classical nova outbursts

doi:10.1093/mnras/stab1506

YNAO OpenIR > 大样本恒星演化研究组

	Helium enrichment during classical nova outbursts
	Guo YL(郭云浪)1,2,3 ; Wu, Chengyuan 4; Wang B(王博)1,2,3
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2021-06-15
卷号	505 期号:2 页码:2975-2982
DOI	10.1093/mnras/stab1506
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	binaries: close stars: evolution novae, cataclysmic variables white dwarfs
摘要	Nova outbursts play an important role in the chemical evolution of Galaxy, especially they are the main source of synthetic C-13, N-15, O-17, and some radioactive isotopes like Na-22 and Al-26. The enrichment of He in nova ejecta indicates that the accreted material may mix with the He-shell (He-mixing). The purpose of this work is to investigate how the He-mixing affects the nova outbursts in a systematic way. We evolved a series of accreting WD models, and found that the mass fraction of H and He in nova ejecta can be influenced by different He-mixing fractions significantly. We also found that both the nova cycle duration and ejected mass increase with the He-mixing fractions. Meanwhile, the nuclear energy generation rate of p-p chains decreases with the He-mixing fraction during the nova outbursts, whereas the CNO-cycle increases. This work can reproduce the chemical abundances in the ejecta of some representative novae, such as GQ Mus, ASASSN-18fv, HR Del, T Aur, and V443 Sct. This implies that the He-mixing process cannot be neglected when studying nova outbursts. This study also develops a He-mixing meter (i.e. He/H) that can be used to estimate the He-mixing fraction in classical nova systems.
资助项目	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[U2031116] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11873085] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11521303] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12003013] ; Chinese Academy of SciencesChinese Academy of Sciences[QYZDB-SSW-SYS001] ; Yunnan Province[2018FB005] ; Yunnan Province[2019FJ001] ; Yunnan Province[202001AS070029] ; CSST project of 'stellar activity and later stage of evolution'
项目资助者	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[U2031116, 11873085, 11521303, 12003013] ; Chinese Academy of SciencesChinese Academy of Sciences[QYZDB-SSW-SYS001] ; Yunnan Province[2018FB005, 2019FJ001, 202001AS070029] ; CSST project of 'stellar activity and later stage of evolution'
语种	英语
学科领域	天文学 ; 恒星与银河系 ; 恒星形成与演化
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:000767895300012
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	X-RAY-EMISSION ; WHITE-DWARFS ; ACCRETION ; MODELS ; ABUNDANCES ; EVOLUTION ; MESA ; NUCLEOSYNTHESIS ; PROGENITORS ; DEPENDENCE
EI入藏号	20221712019096
EI主题词	White dwarfs
EI分类号	657.2 Extraterrestrial Physics and Stellar Phenomena - 802.3 Chemical Operations - 804 Chemical Products Generally
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/114a53/24480
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	Guo YL(郭云浪); Wang B(王博)
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China; 4.Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084, China
第一作者单位	中国科学院云南天文台
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	Guo YL,Wu, Chengyuan,Wang B. Helium enrichment during classical nova outbursts[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,505(2):2975-2982.
APA	Guo YL,Wu, Chengyuan,&Wang B.(2021).Helium enrichment during classical nova outbursts.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,505(2),2975-2982.
MLA	Guo YL,et al."Helium enrichment during classical nova outbursts".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 505.2(2021):2975-2982.

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