Helium enrichment during classical nova outbursts | |
Guo YL(郭云浪)2,3,4; Wu, Chengyuan1; Wang B(王博)2,3,4 | |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
2021-08 | |
卷号 | 505期号:2页码:2975-2982 |
关键词 | binaries: close stars: evolution novae cataclysmic variables white dwarfs |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnras/stab1506 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
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' |
WOS关键词 | WHITE-DWARFS ; ACCRETION ; MODELS ; ABUNDANCES ; EVOLUTION ; CO ; NUCLEOSYNTHESIS ; SIMULATIONS ; PROGENITORS ; DEPENDENCE |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000672803400103 |
资助机构 | 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' |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24480] |
专题 | 云南天文台_大样本恒星演化研究组 |
通讯作者 | Guo YL(郭云浪); Wang B(王博) |
作者单位 | 1.Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084, China 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; |
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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